ONT - SEA

$89 Find Cheap Flights from Ontario to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Seattle departing on 4/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Seattle, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$129
Overall average: $227
Delta
Thu 4/23Thu 4/30
ONT - SEA • 1 stop
Cheapest non-stop
$129
Typical prices: $125-$283
Frontier
Thu 5/21Thu 5/28
ONT - SEA • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Delta offers free Wi-Fi for SkyMiles members.
ONT's streamlined security ensures quick departures.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $129 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Alaska Airlines, Delta and Frontier. Average duration is 2h 57m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Avoid delays
Most punctual • 96% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $119 (round-trip)
Shortest trip • 4h 28m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 30% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 14% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Seattle!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Ontario to Seattle (ONT-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Seattle

Thu, Apr 23 - Thu, Apr 30
Delta Logo
5:05 pm - 11:59 pm
ONT
-
SEA
6h 54m
1 stop
Delta Logo
10:54 am - 1:39 pm
SEA
-
ONT
2h 45mnonstop
$129Delta
Sun, Apr 5 - Wed, Apr 22
Delta Logo
6:00 am - 8:55 am
ONT
-
SEA
2h 55mnonstop
Delta Logo
7:50 pm - 10:37 pm
SEA
-
ONT
2h 47mnonstop
$138Delta
Wed, Apr 29 - Sat, May 2
Delta Logo
1:29 pm - 6:30 pm
ONT
-
SEA
5h 01m
1 stop
Delta Logo
5:55 pm - 10:43 pm
SEA
-
ONT
4h 48m
1 stop
$139Delta
Thu, Apr 16 - Mon, Apr 20
Delta Logo
2:20 pm - 5:24 pm
ONT
-
SEA
3h 04mnonstop
Delta Logo
7:50 pm - 10:37 pm
SEA
-
ONT
2h 47mnonstop
$140Delta
Thu, May 21 - Mon, May 25
Frontier Logo
4:04 pm - 7:05 pm
ONT
-
SEA
3h 01mnonstop
Frontier Logo
11:51 am - 2:35 pm
SEA
-
ONT
2h 44mnonstop
$142Frontier
Thu, May 21 - Sun, May 31
Frontier Logo
4:04 pm - 7:05 pm
ONT
-
SEA
3h 01mnonstop
Frontier Logo
11:51 am - 2:35 pm
SEA
-
ONT
2h 44mnonstop
$146Frontier
Thu, Apr 16 - Tue, Apr 21
Hawaiian Airlines Logo
6:00 am - 8:54 am
ONT
-
SEA
2h 54mnonstop
Hawaiian Airlines Logo
9:24 pm - 11:59 pm
SEA
-
ONT
2h 35mnonstop
$147Hawaiian Airlines
Sun, Apr 5 - Sat, Apr 18
Delta Logo
6:00 am - 8:55 am
ONT
-
SEA
2h 55mnonstop
Delta Logo
5:35 am - 12:14 pm
SEA
-
ONT
6h 39m
1 stop
$148Delta
Wed, Apr 29 - Sat, May 2
Delta Logo
2:20 pm - 5:24 pm
ONT
-
SEA
3h 04mnonstop
Delta Logo
9:50 am - 4:25 pm
SEA
-
ONT
6h 35m
1 stop
$149Delta
Sat, May 16 - Tue, May 19
Southwest Logo
6:20 pm - 10:30 pm
ONT
-
SEA
4h 10m
1 stop
Southwest Logo
7:50 am - 1:45 pm
SEA
-
ONT
5h 55m
1 stop
$151Southwest
Booking Insights

KAYAK's insights & trends for Ontario to Seattle flights

Get data-powered insights and trends into flights from Ontario to Seattle to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Ontario to Seattle?

The average price of all round-trip flights from Ontario to Seattle clicked on KAYAK for each day over the last 12 months.

When flying from Ontario to Seattle, you should consider leaving on a Saturday and avoid Tuesdays if you are looking for the best rates. For your return to Ontario, you’ll find the best rates on Wednesdays and the most expensive ones on Sundays.

What is the cheapest month to fly from Ontario to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Seattle is January, where tickets cost $197 (return) on average. On the other hand, the most expensive months are February and July, where the average cost of round-trip tickets is $288 and $257 respectively.

Can I save money by flying with a layover from Ontario to Seattle?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $276 on average.

How far in advance should I book a flight from Ontario to Seattle?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ontario to Seattle, you should book around 3 weeks before departure, which saves you about 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Expert advice

Expert advice for your flight from Ontario to Seattle

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Frontier and Delta

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines and SEA

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Jennifer Simonson

Jennifer Simonson

Expert on ONT

Jennifer Simonson is driven by her lifelong commitment to exploring the globe. Her insatiable curiosity had led her to immerse herself into diverse locations like Oklahoma City and Pismo. Her hotel recommendations are the result of the myriad hotels she's stayed at across her travels. Along her journey, she cherishes engaging conversations with locals, indulging in the finest ice cream, trying her hand at surfing, and embarking on nature-filled hikes.

Good to know

Low seasonFebruary
Cheapest flight$89
Best time to beat the crowds but there is an average 25% increase in price.
Most popular time to fly with an average 12% increase in price.
Flight from Ontario to Seattle

When to book flights from Ontario to Seattle

Are your dates flexible? Find out the best times to travel from Ontario to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Seattle

  • Is onsite parking available at Ontario International Airport?

    If you plan to leave your car at the airport, Ontario International Airport has a variety of parking options ranging from Valet Parking to premium parking, long-term parking, and even economy parking. Parking Lots 3 and 4 offer the best long-term parking options as cars are charged by the day instead of hourly, as is the case for other parking lots. Parking Lot 3 is the most convenient as it is located close to Terminal 4 and Terminal 2. Parking Lot 5, on the other hand, is the furthest from the airport terminals but also the cheapest one. Anyone parking here can use the free airport shuttle to get to the terminals.

  • Which is the cheapest way to get to Ontario International Airport?

    The bus is the most budget-friendly way to get from the city center to Ontario International Airport. They can be found at Holt @ Palm Eb Fs, where you’ll take the 61 bus. This bus goes directly to the airport, and you’ll be dropped off at Terminal Way 2 in less than 20min.

  • Does Seattle Tacoma International Airport have accessibility services?

    Seattle Tacoma Airport is equipped with special access facilities to provide travelers with a safe and easy way to get around the airport. For instance, points of access to all terminals, as well as other buildings within the airport, are fitted with ramps and escalators to make it easy for anyone in a wheelchair to get through. Similarly, all the toilets have an accessible stall for travelers with limited mobility.

  • What are the layover options when flying from Ontario to Seattle?

    If you’ve booked connecting flights, your layover will depend on the airline you’re flying with. Most airlines will stop at an airport that serves as their hub since it is cheaper and extremely convenient. For example, if you’re flying with Delta, you’re most likely to have a layover at Salt Lake City International Airport, the only hub for Delta Airlines on this route. Similarly, flights serviced by United Airlines are scheduled for a layover at San Francisco International Airport, which is a hub for the airline.

  • What is the cheapest flight from Ontario to Seattle?

    In the last 3 days, the lowest price for a flight from Ontario to Seattle was $89 for a one-way ticket and $129 for a round-trip.

  • Do I need a passport to fly between Ontario and Seattle?

    A passport is not required to fly from Ontario to Seattle.

  • Which airlines offer Wi-Fi service onboard planes from Ontario to Seattle?

    All the following airlines offer inflight Wi-Fi service on the Ontario to Seattle flight route: Alaska Airlines, Delta, Hawaiian Airlines, Asiana Airlines, JetBlue, British Airways, and American Airlines.

  • Which aircraft models fly most regularly from Ontario to Seattle?

    The Boeing 737-800 Passenger/BBJ2 (winglets) is the aircraft model that flies most regularly on the Ontario to Seattle flight route.

  • Which airline alliances offer flights from Ontario to Seattle?

    SkyTeam, and oneworld are the airline alliances operating flights between Ontario and Seattle, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Ontario to Seattle?

    There are nonstop flights from Ontario to Seattle on a daily basis.

  • Which is the best airline for flights from Ontario to Seattle, Southwest or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Seattle are Southwest and Alaska Airlines. With an average price for the route of $268 and an overall rating of 8.0, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $270 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Ontario to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Ontario with another airline. Booking your flights between Ontario and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Ontario to Seattle

  • Looking for a cheap flight? 25% of our users found flights on this route for $193 or less one-way and $232 or less round-trip.
  • Los Angeles International Airport (LAX) is about 50 miles away from Ontario International Airport (ONT). It provides an alternative to Ontario International Airport with better amenities and more flight options.
  • Holiday Inn Ontario International Airport is the closest hotel to the airport. If you have an early morning flight, consider spending the night here to avoid the hectic commute to the airport.
  • If you want to watch Netflix or get some work done during your flight, consider booking with Delta Airlines. They offer in-flight Wi-Fi, and the seats have power and USB outlets in case you want to recharge your devices.
  • Ontario International Airport has a good number of pet relief areas in case you’re traveling with a pet or service animal. You can find them in Terminals 2 and 4, near Gates 210 and 410, respectively.
  • Seattle-Tacoma International Airport (SEA) has shower facilities in case you want to freshen up after your flight. They can be found in the Delta Airlines Sky Club located at Concourse A, near Gate 1.

Prefer to fly direct from Ontario to Seattle?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Ontario to Seattle/Tacoma Intl.
Find which airlines fly direct from Ontario Airport to Seattle/Tacoma Intl Airport, which days they fly and book direct flights.

Direct departures

Ontario to Seattle/Tacoma Intl

Monday

Alaska Airlines,Delta,Frontier

Alaska Airlines,Delta, +1 more

Tuesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Wednesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Thursday

Alaska Airlines,Delta,Frontier

Alaska Airlines,Delta, +1 more

Friday

Alaska Airlines,Delta,Frontier

Alaska Airlines,Delta, +1 more

Saturday

Alaska Airlines,Delta,Frontier

Alaska Airlines,Delta, +1 more

Sunday

Alaska Airlines,Delta,Frontier

Alaska Airlines,Delta, +1 more

See more direct flights

Direct returns

Seattle/Tacoma Intl to Ontario

Monday

Alaska Airlines,Delta,Frontier

Alaska Airlines,Delta, +1 more

Tuesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Wednesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Thursday

Alaska Airlines,Delta,Frontier

Alaska Airlines,Delta, +1 more

Friday

Alaska Airlines,Delta,Frontier

Alaska Airlines,Delta, +1 more

Saturday

Alaska Airlines,Delta,Frontier

Alaska Airlines,Delta, +1 more

Sunday

Alaska Airlines,Delta,Frontier

Alaska Airlines,Delta, +1 more

See more direct flights

Reviews of the top 5 airlines serving from Ontario to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4318 reviews
8.6Crew
8.0Comfort
8.1Boarding
7.0Food
7.5Entertainment
Airline reviews

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

8.0 ExcellentTobin, Mar 2026
SJC - BUR
Read more Southwest reviews

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

The Southwest experience has definitely taken a dive from its early days. You can no longer deferentiate from other airlines. Air travel is too expensive. Southwest is no longer budget friendly. They have lost me as a loyal customer.

The charges were ridiculous for an hour flight and the turbulence was very scary.

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

Paid for premium extra leg room but the bin space for rows 1-3 had to go in rows 4-6 and 4-6 had to go to 7-9 because flight attendants have snacks and their luggage upfront. So we pay extra to have to fight thru traffic to get our bags. Only 2nd day of new seating so hope they fix this.

The wifi on the plane is great. The only issue that I have is that I prefer an aisle seat and on my trips this week, I was either in the middle or window. If we can work to secure aisle seating, I will be thrilled. Nice trip.

Great flight but super high price. Glad it was a business trip and not personal

3 hour delay. Had to change plans and was still delayed.

They cancelled the flight and provided no support to find another way home or how to get a refund. Links provided didn’t work and phone wait times were over eight hours. Battery on my phone couldn’t last long enough.

signage from the upper area to the tram down 2 escalator!

Great flights, little turbulence, pilots kept stewardesses seated & safe, all staff friendly & professional

There is no entertainment on the plane. The snack is minimal. The crew was nice and professional.

in-flight wifi was not working well. also the cabin temperature was a bit hot.

Nice crew, healthy snacks and drinks available. Flight to Seattle was short and comfortable.

The plane not having any overhead bin space was inconvenient. Anytime my luggage has to be checked it ends up covered in scratches and that’s not covered by the airlines for replacement/repair. The WiFi did not work or was not offered for the flight from Seattle to Vancouver.

Flight delayed three times no explanation, left 5 hours after initial time, disrupted my job

Flight was on time. Crew was helping & seat were comfortable.

Larger seats and more room would elevate the experience. Otherwise, it was good!

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Everything was good except wifi and a leaking drink chiller. The floor was all wet and my bag was soaked. Did not notice until debarking. Have not heard back from Delta. Even though this was leg one of an international flight in first class, they denied access to their Sky Club - very disappointing!

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

The crew, and fellow passengers, were super gracious and kind. There seemed to be plenty of bin space even though the plane was full. It’s nice to get a glass of wine with dinner in Premiere seating, and there was a lot of food.

Everything I mentioned earlier - the airbus was more comfortable indeed and the experience was further enhanced.

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

Awesome! On time flight, early arrival, and a complimentary upgrade!

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

No charging outlets worked. Other than collecting trash attendants didn’t come around. No one could hear flight attendants announcements during the flight. Seat pads were horrible. Sitting on a board for 5 hours. What happened to Hawaiian airlines comfort, hospitality, and extras? Our pilots did an excellent job trying to minimize turbulence and incredible job in landing in windy conditions.

I like that if they asked you to checked in a bag at the gate they give you priority to board

Yall need to integrate your system with Alaska more efficiently. They booted me off the first flight because of a discrepancy on your end.

Unfortunately, I was put into the middle seat in the first row of premium seating. Sounds nice right? No! that is the worst seat in the plane. I wish I was in economy rather than be in that seat! There is no seat back pocket, no tray table, no charger. Nothing! so unless you're row mates are willing to let you share their basic amenities any flyer should have, you are stuck. It was the worst experience ever! And the flight attendant forgot to take my drink order. I felt like the forgotten flyer.

Delayed and cancelled flights were hard and very stressful, both ways!

The flight was CANCELED!!! Can’t get much more “poor” than that. I had to switch to American Airlines, add another layover and got home in Honolulu 4 hours later than I was supposed to be home. One bright spot was Josh with Alaska Airlines at SFO. He got me on a United Flight that got me home a few hours before I would have. Without him I would have gotten home almost 7 hours after my originally scheduled flight.

Canceled my flight within 24 hours, causing me arriving home midnight. Will never book Hawaiian airlines anymore

I received several emails about my 3:10 flight. When I showed up to the airport at 12:30 to check my bags I was told the flight was actually at 1 pm. They grudgingly rebooked me for a flight at 5:22 to Vegas to get a connecting to LAX. I did find the gate for my original 3:10 flight but they were booked. I proceeded to receive status updates and gate change information for the 3:10 flight, even though I was apparently never supposed to be on that flight

The food options were limited and very specific. Some type of entertainment option for a 4.5 hour flight would have been nice.

The Kayak confirmation number did not work for checking in the day before. I checked in at 8.30 using my ticket number. When I arrived at the airport, I was informed that the flight was overbooked, and since I had checked in late, I did not have a seat. The Next flight was not until ten PM. I called my wife, who had been taking care of our kids all weekend, and she was upset, calling me a liar and telling me to stay in SD. It turned my weekend getaway into a nightmare! I blame the Kayak website and will not book flights using your app in the future.

Remind customers of the need to have passport or new ID for boarding.

The flight never took off and we spent 7 hours at the airport

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

Horrible. I would never fly Frontier again. The booking process is tricky at best, but fraudulent in my opinion. Frontier customer service did nothing to rectify my purchase -- I ended up paying more than double what I could have gotten from other airlines and nearly triple what I thought I was buying from Frontier. Their booking practices are unfair to the consumer.

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

This airline sucks. They offer low rates then charge you for everything, the app does not work well, the seats are the most uncomfortable. Maintenance issues on the flight, and you still have to sit through their credit card commercials. People are nice enough but does not make up for overall poor experience.

I’m not gonna fly Frontier Airlines because booking is not an option. No water or food is for high price, not equipped for health emergency incompetent crew for emergency services. Cheap airline shows it is cheaper in all service categories. Boarding is the best of all airlines!

Cancelled flight after I arrived at airport after 75 min drive and parking. Next flight was 4 days in the future. Had to scramble and buy a much more expensive flight on another carrier.

I never got to experience the flight because they delayed my first flight and I missed this one. Then Frontier didn't want to help me rebook a flight to get me to my final destination.

Everything you need to know for your flight from Ontario to Seattle

Information on your arrival and departure airports