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STL - SEA

Find cheap flights from St. Louis to Seattle from $69

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Seattle departing on 5/8. 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
0 bags
dv. 5/24
dv. 5/31

Search 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 St. Louis to Seattle.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Seattle.
In the last 7 days travelers have searched 44,632,927 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from St. Louis to Seattle (STL-SEA)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis 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 and deals for you by selecting your travel dates.
Choose your dates
7:51 pm - 4:31 pmSTL-SEA
22h 40m1 stop
9:55 am - 9:03 pmSEA-STL
9h 08m1 stop
$117Frontier
Find Deal
dc., maig 8 - dl., maig 13
7:51 pm - 4:31 pmSTL-SEA
22h 40m1 stop
10:08 pm - 10:32 pmSEA-STL
22h 24m1 stop
$127Frontier
Find Deal
dc., maig 8 - ds., maig 18
7:45 am - 12:26 pmSTL-SEA
6h 41m1 stop
1:15 am - 10:28 amSEA-STL
7h 13m1 stop
$206American Airlines
Find Deal
dc., maig 8 - dv., maig 17
5:04 am - 11:08 amSTL-SEA
8h 04m1 stop
1:15 am - 12:31 pmSEA-STL
9h 16m1 stop
$214American Airlines
Find Deal
dc., maig 8 - dv., maig 10
6:59 pm - 11:57 pmSTL-SEA
6h 58m1 stop
5:15 pm - 12:36 amSEA-STL
5h 21m1 stop
$216Delta
Find Deal
dc., ag. 14 - dt., ag. 20
6:30 pm - 11:59 pmSTL-SEA
7h 29m1 stop
5:15 pm - 12:39 amSEA-STL
5h 24m1 stop
$227Delta
Find Deal
dc., jul.. 24 - dj., ag. 1
7:41 pm - 10:00 pmSTL-SEA
4h 19mnonstop
5:58 pm - 11:59 pmSEA-STL
4h 01mnonstop
$237Alaska Airlines
Find Deal
dt., juny 4 - dc., juny 5
7:41 pm - 10:00 pmSTL-SEA
4h 19mnonstop
5:58 pm - 11:59 pmSEA-STL
4h 01mnonstop
$277Alaska Airlines
Find Deal
dj., juny 6 - ds., juny 8
4:51 pm - 11:00 pmSTL-SEA
8h 09m1 stop
12:55 pm - 10:07 amSEA-STL
19h 12m2 stops
$345United Airlines
Find Deal
dl., ag. 19 - dt., ag. 27
5:20 pm - 9:48 amSTL-SEA
18h 28m1 stop
11:59 pm - 9:51 amSEA-STL
7h 52m1 stop
$350United Airlines
Find Deal
dl., ag. 19 - dc., ag. 28

Flights from St. Louis to Seattle - Travel Insights & Trends

Get data-powered insights and trends into flights from St. Louis 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 St. Louis to Seattle?

The average price of all flights from St. Louis to Seattle clicked on KAYAK for each day over the last 12 months.
When flying from St. Louis to Seattle, you should consider leaving on a Thursday and avoid Saturdays if you are looking for the best rates. For your return to St. Louis, you’ll find the best rates on Tuesdays and the most expensive ones on Mondays.

What is the cheapest month to fly from St. Louis to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis 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 St. Louis to Seattle is November, where tickets cost $277 on average. On the other hand, the most expensive months are July and June, where the average cost of tickets is $547 and $541 respectively.

How far in advance should I book a flight from St. Louis to Seattle?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from St. Louis to Seattle, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 87 days before departure.

Which airlines provide the cheapest flights from St. Louis to Seattle?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on Frontier ($69) and Spirit Airlines ($90). The cheapest round-trip tickets were found on Frontier ($117) and American Airlines ($206).

Which airlines fly non-stop between St. Louis and Seattle?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from St. Louis to Seattle.
There is just one airline that flies from St. Louis to Seattle direct and that is Alaska Airlines. The best one-way deal found from Alaska Airlines for the route is $167.

How many flights are there between St. Louis and Seattle per day?

Each day, there are between 3 and 5 nonstop flights that take off from St. Louis and land in Seattle, with an average flight time of 4h 17m. The most common departure time is 2:00 pm and most flights take off in the afternoon. Each week, there are 26 flights. The most frequent day of departure is Saturday, when 19% of all weekly flights depart. The fewest flights depart on a Wednesday.

Which cabin class options are there for flights between St. Louis and Seattle?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from St. Louis to Seattle take?

The average nonstop flight takes 4h 14m, covering a distance of 1,704 miles.

What’s the earliest departure time from St. Louis to Seattle?

Early birds can take the earliest flight from St. Louis at 7:00 am and will be landing in Seattle at 9:12 am.

What’s the latest departure time from St. Louis to Seattle?

If you prefer to fly at night, the latest flight from St. Louis to Seattle jets off at 7:41 pm and lands at 10:00 pm.

Good to know

Low season

January

High season

June

Cheapest flight

$69
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 43% increase in price.
Flight from St. Louis to Seattle

When to book flights from St. Louis to Seattle

Are your dates flexible? Find out the best times to travel from St. Louis 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 St. Louis to Seattle

  • How far is downtown Seattle from Seattle Tacoma International Airport?

    Downtown Seattle is about 15 miles away from the airport. There are multiple ways to get there, although they all vary in cost, speed, and convenience. For instance, the fastest way to downtown Seattle would be by taking a taxi. They can easily be found on the third floor of the parking garage and take less than 25min. Alternatively, you can opt for public transport, which is significantly cheaper but slower than a taxi. To board your train, just head to the bridge on the fourth floor of the parking garage where the terminal is located.

  • Does Seattle Tacoma Airport offer wheelchair services?

    Seattle Airport offers complimentary wheelchair services to aid travelers in getting from the plane to baggage claim to the ground transportation center with ease. However, due to logistics reasons, the airport mainly works with the airlines to provide these services. Therefore, the best way to get wheelchair assistance would be by booking with your airline, which will then put on a note on your reservation record informing the airport that you require special assistance.

  • Is on-site parking available at St. Louis Lambert International Airport?

    St. Louis Lambert Airport has plenty of on-site parking options. Two are specially dedicated for long-term parking. They include Long-Term Parking Lot B and Long-Term Parking Lot C, which is split into a covered and uncovered section. Long-Term Parking Lot B is located past Daily Parking Lot A east of the terminal, while Parking Lot C is situated southwest of the airport.

  • Which airline has a lounge in St Louis Lambert Airport?

    St. Louis Lambert Airport has about four lounges for guests to hang out and relax while waiting for their boarding call. The American Airlines Admirals Club is located Airside on Terminal 1 near Gate C1. The Wingtips Lounge, which is open to all travelers regardless of the airline, is located in Terminal 2 near Gate E22. Here you can find a range of snacks and beverages as well as a TV, charging stations, and Wi-Fi in case you need to send a few emails before boarding your flight.

  • What is the cheapest flight from St. Louis to Seattle?

    In the last 3 days, the lowest price for a flight from St. Louis to Seattle was $69 for a one-way ticket and $117 for a round-trip.

  • Do I need a passport to fly between St. Louis and Seattle?

    No

  • Which airlines offer Wi-Fi service onboard planes from St. Louis to Seattle?

    Alaska Airlines, and American Airlines offer inflight Wi-Fi service on the St. Louis to Seattle flight route.

  • Which aircraft models fly most regularly from St. Louis to Seattle?

    The Boeing 737 is the aircraft model that flies most regularly on the St. Louis to Seattle flight route.

  • Which airline alliances offer flights from St. Louis to Seattle?

    oneworld is the only airline alliance operating flights between St. Louis and Seattle.

  • On which days can I fly direct from St. Louis to Seattle?

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

  • Which is the best airline for flights from St. Louis to Seattle, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from St. Louis to Seattle are Alaska Airlines and Delta. With an average price for the route of $397 and an overall rating of 8.1, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $286 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from St. Louis 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 St. Louis to Seattle.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from St. Louis 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 St. Louis 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 St. Louis with another airline. Booking your flights between St. Louis 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 St. Louis 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 St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from STL to Seattle

  • Looking for a cheap flight? 25% of our users found flights on this route for $248 or less one-way and $486 or less round-trip.
  • If you’re looking for a way to cut down on the cost of tickets, consider booking connecting flights instead of a direct one. More often than not, airlines will charge lower prices for connecting flights on the same route.
  • While booking your flight, pay close attention to the in-flight services provided. This is because different flights will have varying services available even when they are facilitated by the same airline.
  • If you’re traveling with the kids, you’ll be happy to learn that Seattle Tacoma International Airport (SEA) has a child play area where the kids can play around as you clear with baggage claim. It is located on Concourse D next to Qdoba.
  • St Louis Lambert International Airport (STL) is a pet-friendly airport. If you’re traveling with a service animal or pet, there are multiple relief areas for the four-legged friends. You’ll find two on Concourse E close to Gate E4 while the other one is found on Concourse C near Gate C24.
  • If you need a private space to nurse your child at Seattle Airport, you should check out the nursing pods on Concourse A, near Gate A10E.
See more tips

Prefer to fly non-stop from St. Louis to Seattle?

Find which airlines fly direct from Lambert-St Louis to Seattle/Tacoma Intl, which days they fly and book direct flights.

Nonstop departures

Lambert-St Louis to Seattle/Tacoma Intl

Monday

Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more

Air Tahiti Nui, Alaska Airlines, +4 more

Tuesday

Air Tahiti Nui, Alaska Airlines, American Airlines, +4 more

Air Tahiti Nui, Alaska Airlines, +5 more

Wednesday

Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more

Air Tahiti Nui, Alaska Airlines, +4 more

Thursday

Air Tahiti Nui, Alaska Airlines, American Airlines, +4 more

Air Tahiti Nui, Alaska Airlines, +5 more

Friday

Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more

Air Tahiti Nui, Alaska Airlines, +4 more

Saturday

Air Tahiti Nui, Alaska Airlines, American Airlines, +4 more

Air Tahiti Nui, Alaska Airlines, +5 more

Sunday

Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more

Air Tahiti Nui, Alaska Airlines, +4 more

See more direct flights

Nonstop returns

Seattle/Tacoma Intl to Lambert-St Louis

Monday

Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more

Air Tahiti Nui, Alaska Airlines, +4 more

Tuesday

Air Tahiti Nui, Alaska Airlines, American Airlines, +5 more

Air Tahiti Nui, Alaska Airlines, +6 more

Wednesday

Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more

Air Tahiti Nui, Alaska Airlines, +4 more

Thursday

Air Tahiti Nui, Alaska Airlines, American Airlines, +5 more

Air Tahiti Nui, Alaska Airlines, +6 more

Friday

Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more

Air Tahiti Nui, Alaska Airlines, +4 more

Saturday

Air Tahiti Nui, Alaska Airlines, American Airlines, +5 more

Air Tahiti Nui, Alaska Airlines, +6 more

Sunday

Air Tahiti Nui, Alaska Airlines, American Airlines, +4 more

Air Tahiti Nui, Alaska Airlines, +5 more

See more direct flights
See more direct flights

Top 5 airlines serving from St. Louis to Seattle

 
See real verified KAYAK customer reviews for airlines flying from St. Louis 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 St. Louis 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.
8.1
Alaska AirlinesOverall score based on 9111 reviews
7.3entertainment
7.9comfort
8.6crew
7.3food
8.2boarding
Airline reviews

It was much better than expected. Short flight and smaller plane so no entertainment or food.

10.0 ExcellentAnonymous, Apr 2024SLC - SEA
Read more about Alaska Airlines reviews

It was much better than expected. Short flight and smaller plane so no entertainment or food.

It took around two hours to depart. Just sitting in the tamarack waiting. It impacted my traveling plans in a very dramatic way. When we returned, it took around two hours for us to be able to get our luggage. Ridiculous!!

I thought every thing was good with the acceptation of the long layover between Seattle and the Tampa trip.

While the flight and the legroom was good boarding took a long time. The different groups Boarding made no sense as those in the back of the flight boarded last causing delays as people try to find room for their luggage in the upper bins. While there were plenty of seats on the flights We were spaced so that some rows were filled and others were empty. My first flight was very crowded and uncomfortable. On the way back both flights did not have Wi-Fi nor the entertainment package. We were only made aware of this a few hours before the flight. Since the flight was in the morning, I was asleep and was not able to download Books or other media to my phone. This is my first time flying Alaska airlines and I will admit to thinking twice before I do so again.

Our flight was delayed by six hours, our plane never left Portland the night before but the airline didn’t inform anyone till two hours before a six am flight. The plane, our plane never left the west coast! No plane no flight, simply let folks know when you know, not hours and hours later. No one apologized, no one said much of anything, we were just expected to wait quietly and await instructions.

The staff were great and the layover times were excellent no multiple hours. I just hate the Boxed Water. So you really have to purchase high price water in the airport.

Both flights were delayed. We sat on the tarmac on Boise for 3 hours with little updates

This flight was significantly affected by poor wifi connections. I couldn’t get my work done because the wifi kept dropping. Even texts were not going through. There is no seat power in premium class either. I fly a lot. Today was my 10th flight in 4 weeks. This was by far the only flight that was sub par.

4 out of 4 flights cancelled or delayed. 5th trip with similar experience

On time, comfortable seats with plenty of leg room, nice staff. Pretty good!

It was a Red-Eye flight so was not comfortable enough to sleep, but seat was as expected. Crew was great and in-flight entertainment was excellent. Flight was smooth

Standard economy seats on Deltas 767 were better than Alaska premium seats on their 737 MAX9; more legroom, wider seats. Entertainment was great, no ipad or phone required. Could have included a meal service.

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Flight was on time, the crew was personable & professional, & the plane arrived early which was nice.

This flight landed early, but deplaned late. We were stuck sitting and waiting for a gate for over an hour

My flight was very clean and the location was comfortable. The service was great. A satisfying flight!

I appreciated being upgraded. I was very disappointed with my 13 hr layover in Seattle to geg, while my friends who flew Alaska made it home as scheduled. I had to reserve a hotel on my dime.

Delta needs to step up the meals and snacks. They have been serving the same two meals for three years.... It is time to change it up.

Really liked the choice of the 4 free snack options. Crew great. Good vibe on plane.

Flight delayed from Cape Town to Washington then got diverted to miami and in miami we had to fend for ourselves , im still trying to get to Shreveport now

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

they made me check my carryon. There was space in the overhead bins.

Nice flight, nice crew but no cookie or napkin with my seltzer.

Trip was smooth bumpy from the wind but no issues at all the crew attendant was very pleasant and had great customer service

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

The Flight attendant had an attitude and didn't allow anyone any time to prepare for landing despite being absent throughout the entire trip

Flight boarded without pilots. Sat on plane for 3 hrs. after over an hour late boarding. Plane never took off. Had to deplane near midnight. Line for rebooking was 3 hours + long. I had to leave.

The flight was great but board was a nightmare. The gate was changed 4 times during the layover period

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Cold air blew constantly on my legs almost making me numb.

Missed the flight because of them and up geting a rental car

Delayd flight out of atl as always miss my conection in dfw no flight untill next day

Comfort of seats, ease of boarding. Food selection could be better

i suspect i caught flu on this flight as i could hear someone coughing a few rows back and ended up with flu a few days later. also tiresome to have to watch movies on my device by holding up smartphone screen, would have liked to have in seat display.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Not have to pay for every single item to take a flight. Seating and delays sucked.

Flight was cancelled and I had to spend the night in the airport lugging my suitcase around

If you don’t check in 24 hours in advance, they will charge you $110 to check your bag instead of the $30. I did not get an email with this information and did not check in. In addition, my flight home was cancelled at layover and I had to spend the night in the airport, and then have another layover at another airport before making it home. Will not fly frontier again.

Terrible. Seats are bad and the baggage policy is inconsistent

Flight delayed 3 times, resulting in late arrival, rental car place gave car away resulting in increased BS charges because I was late. Frontier blows.

I paid for extra leg room. The flimsy plastic seat underneath the floatation seat did not line up with the arm rests. It seemed as if the plastic part was zip tied on but immovable. This caused severe uncomfortable for the duration of the flight.

Book cheap flights from St. Louis to Seattle

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Seattle found on KAYAK in the last 72 hours.
5/8dc.
1 stopFrontier
22h 40mSTL-SEA
$69
5/23dj.
1 stopFrontier
26h 41mSTL-SEA
$70
8/13dt.
1 stopAmerican Airlines
8h 08mSTL-SEA
$98
8/13dt.
1 stopAmerican Airlines
6h 59mSTL-SEA
$99
6/17dl.
1 stopDelta
6h 22mSTL-SEA
$108
6/5dc.
nonstopAlaska Airlines
4h 19mSTL-SEA
$119
7/9dt.
1 stopDelta
7h 29mSTL-SEA
$149
5/1dc.
2 stopsUnited Airlines
11h 23mSTL-SEA
$153
5/20dl.
nonstopAlaska Airlines
4h 19mSTL-SEA
$159
10/2dc.
2 stopsUnited Airlines
13h 56mSTL-SEA
$228

Search by stops

Search by airline

Search by price

Last minute flights from St. Louis to Seattle

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from St. Louis to Seattle that are departing in the next 10 days.
4/24dc.
multi-stopFrontier
12h 56mSTL-SEA
4/30dt.
multi-stopFrontier
10h 12mSEA-STL
$188
4/24dc.
multi-stopFrontier
12h 56mSTL-SEA
4/27ds.
multi-stopFrontier
21h 34mSEA-STL
$226
4/25dj.
multi-stopAmerican Airlines
9h 23mSTL-SEA
4/26dv.
multi-stopAmerican Airlines
7h 37mSEA-STL
$264
4/26dv.
multi-stopDelta
7h 44mSTL-SEA
4/29dl.
multi-stopDelta
5h 56mSEA-STL
$266
4/26dv.
multi-stopUnited Airlines
7h 25mSTL-SEA
4/29dl.
multi-stopUnited Airlines
13h 08mSEA-STL
$271
4/26dv.
multi-stopDelta
7h 44mSTL-SEA
4/27ds.
multi-stopDelta
8h 16mSEA-STL
$333
4/24dc.
multi-stopUnited Airlines
11h 23mSTL-SEA
4/30dt.
multi-stopUnited Airlines
13h 11mSEA-STL
$362
4/24dc.
nonstopAmerican Airlines
4h 20mSTL-SEA
4/27ds.
multi-stopAmerican Airlines
10h 29mSEA-STL
$630
4/24dc.
nonstopAlaska Airlines
4h 20mSTL-SEA
4/30dt.
nonstopAlaska Airlines
3h 56mSEA-STL
$657
4/26dv.
nonstopAlaska Airlines
4h 25mSTL-SEA
4/29dl.
nonstopAlaska Airlines
3h 56mSEA-STL
$817

Search by stops

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Search by price

St. Louis - Seattle Flights

Departure:

St. Louis (STL)United States

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - St. Louis

Cabin classes:

$1,186
$1,955
$1,146
$268