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STL - PDX

$122 Find cheap flights from St. Louis to Portland

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 Portland departing on 8/28. 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
Sat 6/29
Sat 7/6

Search hundreds of travel sites at once for deals on flights to Portland

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Portland.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Portland.
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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Cheap flight deals from St. Louis to Portland (STL-PDX)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Portland 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
1:55 pm - 7:06 pmSTL-PDX
31h 11m2 stops
9:39 am - 1:05 pmPDX-STL
25h 26m2 stops
$184Spirit Airlines
Find Deal
Wed, Jun 19 - Tue, Jun 25
5:36 pm - 11:46 pmSTL-PDX
8h 10m1 stop
5:41 pm - 10:42 amPDX-STL
15h 01m2 stops
$185Frontier
Find Deal
Fri, Jun 7 - Tue, Jun 11
7:29 pm - 2:41 pmSTL-PDX
21h 12m2 stops
8:52 am - 9:40 amPDX-STL
22h 48m1 stop
$189Frontier
Find Deal
Sun, Jun 9 - Thu, Jun 13
7:29 pm - 4:38 pmSTL-PDX
23h 09m2 stops
8:52 am - 9:40 amPDX-STL
22h 48m1 stop
$190Frontier
Find Deal
Mon, Jun 10 - Thu, Jun 13
1:55 pm - 12:08 amSTL-PDX
12h 13m1 stop
11:53 pm - 7:55 pmPDX-STL
18h 02m2 stops
Wed, Jun 5 - Wed, Jun 12
1:55 pm - 12:08 amSTL-PDX
12h 13m1 stop
12:53 am - 2:32 pmPDX-STL
11h 39m1 stop
Wed, Jun 12 - Wed, Jun 26
6:50 pm - 11:42 pmSTL-PDX
6h 52m1 stop
5:19 pm - 12:58 amPDX-STL
5h 39m1 stop
$238Delta
Find Deal
Mon, Jun 3 - Fri, Jun 7
7:47 pm - 12:38 amSTL-PDX
6h 51m1 stop
11:59 pm - 8:54 amPDX-STL
6h 55m1 stop
$267American Airlines
Find Deal
Sat, Jun 8 - Wed, Jun 12
5:45 pm - 10:34 pmSTL-PDX
6h 49m1 stop
5:19 pm - 12:58 amPDX-STL
5h 39m1 stop
$286Delta
Find Deal
Sat, Jun 8 - Tue, Jun 11
6:18 pm - 11:03 pmSTL-PDX
6h 45m1 stop
1:22 pm - 10:58 pmPDX-STL
7h 36m1 stop
$297American Airlines
Find Deal
Mon, Jun 3 - Sat, Jun 8

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

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

The average price of all flights from St. Louis to Portland clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from St. Louis to Portland, look for departures on Saturdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Portland, Saturday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis to Portland, 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 Portland is September, where tickets cost $358 on average. On the other hand, the most expensive months are March and December, where the average cost of tickets is $475 and $475 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis to Portland, 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 Portland, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 10 days before departure.

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

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from St. Louis to Portland found on KAYAK was with Spirit Airlines for $122. Spirit Airlines proposed a round-trip connection from $184 and Frontier from $185.

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

There is a maximum of 1 nonstop flight a day that takes off from St. Louis and lands in Portland, with an average flight time of 4h 10m. The most common departure time is 1:00 pm and most flights take off in the afternoon. Each week, there are 2 flights.

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

Early birds can take the earliest flight from St. Louis at 1:50 pm and will be landing in Portland at 4:00 pm.

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

If you prefer to fly at night, the latest flight from St. Louis to Portland jets off at 2:20 pm and lands at 4:30 pm.

Good to know

Low season

January

High season

July

Cheapest flight

$122
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from St. Louis to Portland

When to book flights from St. Louis to Portland

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

  • What are the transport options from Portland International Airport?

    The easiest way to get downtown is by taking the light rail. PDX is connected to the city by the MAX light rail system, and the Red Line trains depart every 15min. You can also take the shuttle from PDX with several companies offering door-to-door and inter-city shuttle services from PDX. Taxis are also available on the lower roadway around baggage claim, and no reservations are needed. Car rentals are available too, and most companies provide shuttle services from the baggage claim area to the offsite car rental station on the lower roadway.

  • Does Portland International Airport offer accessible services?

    The airport has provided elevators and ramps for passengers in wheelchairs. People with limited mobility also get reserved parking spots, accessible restrooms, fast track services, and dedicated seating areas. Aira services are available for low-vision passengers traveling through PDX. They will also be allowed guide dogs, and braille signage, audio announcements, and tactile guide paths are provided to guide them through PDX. Visual paging is available for the hard of hearing, and TDD telephones are also present at PDX.

  • Which airlines have lounges at Portland International Airport?

    Alaska Airlines, United Airlines, and Delta have lounges at PDX. Delta runs the only members-only lounge at PDX, while the other two options you can access by paying at the door. To access these lounges, you must show your flight ticket and pay a one-time fee. The Delta lounge is on Concourse D airside, Alaska lounge is on Concourse C airside, and United Club is on Concourse E airside. The airport also has a USO lounge for active US military members landside on the mezzanine level.

  • Does Portland International Airport offer family services?

    PDX offers nursing rooms for mothers who are traveling with infants. The nursing rooms provide comfortable seating, fold-down tables, and power outlets. The PDX nursing facilities are airside near the south lobby and around Gate D2. The airport has also provided a children’s play area for passengers with older kids. The PDX play areas are two, and they are both airside around Gates C17 and D7.

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

    In the last 3 days, the lowest price for a flight from St. Louis to Portland was $122 for a one-way ticket and $184 for a round-trip.

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

    No

  • Which airports will I be using when flying from St. Louis to Portland?

    St. Louis and Portland are both served by 1 main airport. You will leave St. Louis from Lambert-St Louis and will be arriving at Portland.

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

    We unfortunately don’t have that data for this specific route.

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

    You can catch a nonstop flight from St. Louis to Portland on on Saturday, and Sunday.

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

    The two airlines most popular with KAYAK users for flights from St. Louis to Portland are Delta and United Airlines. With an average price for the route of $415 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $462 and an overall rating of 7.4.

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

    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 Portland.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portland 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 Portland?

    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 Portland with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and PDX 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 Portland?

    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 Portland 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

KAYAK’s top tips for finding a cheap flight from St. Louis to Portland

  • St. Louis Lambert International Airport (STL) comprises two terminals and five concourses, A to E. The airport has provided courtesy shuttles for inter-terminal transportation, which run every 5-10min.
  • STL welcomes all pets to the airport. The airport has provided six relief areas: four indoors and two outdoors. The indoor areas are airside, and the outdoor areas are outside Terminal 2 and on the upper west side of Terminal 1.
  • Around 1,084 kg of carbon is emitted on flights from St. Louis to Portland. You can fly more sustainably with Frontier Airlines; they offer a flight emitting 60% less carbon per passenger.
  • Unwind after your flight with a holistic massage or facial at the Dragontree Spa at Portland International Airport (PDX). The spa is open between 9 am and 8 pm and is on Concourse C airside.
  • US Bank has a full-service branch at STL for those in need of banking or currency exchange services. The bank is open weekdays from 8 am to 5 pm and sits on the lower level of Terminal 1.
See more tips

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

Find which airlines fly direct from Lambert-St Louis to Portland, which days they fly and book direct flights.

Nonstop departures

Lambert-St Louis to Portland

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Nonstop returns

Portland to Lambert-St Louis

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights
See more direct flights

Top 5 airlines serving from St. Louis to Portland

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Portland. 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 Portland? 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
Alaska AirlinesOverall score based on 9192 reviews
7.9Comfort
8.2Boarding
8.6Crew
7.3Entertainment
7.3Food
Airline reviews

Easy and quick boarding. A bit of a hard landing at PDX

10.0 ExcellentAnonymous, May 2024GEG - PDX
Read more about Alaska Airlines reviews

Easy and quick boarding. A bit of a hard landing at PDX

I think u could offer more than apple juice or water.

Pleasant crew and on time travel. It was all good.

It was ok. Alaska was adequate. Efficient and what I paid for it was fair. The boarding area at the gate was a joke. By the time they get past the C boarding group people all line up impatiently and then it’s chaos. We were boarding early then we sat on the tarmac for 30 minutes. I would of rather sat in the airport.

The entire flight was terrible. I recently had neurocervical surgery, and I needed a wheelchair to get to the gate. They were wonderful, truly. The flight staff was lovely, as well. Despite the need for assistance, I was put in the middle seat in the last row in front of the toilets. It was "policy" that I couldn't be moved. The pain I felt after the flight was astromnomical. The flight was so WARM, I was sweating, and the "air" did nothing to the stuffy feeling. The seats were uncomfortable, the plane itself was in bad/worn condition (although very clean - thanks to the staff) - and the flight was definitely rocky (not the pilot's fault, of course). All in all - one of the worst flights I've ever taken. The humans were wonderful!! You have a really great team. But your flight policies and your plane are absymal. For what you charge, you need to upgrade your plane and your policies.

First flights on Alaska Air, and I will go out of my way to fly them whenever I can in the future. An incredible experience, above and beyond any other airline.

The seats were incredibly small and the attendants were grumpy the whole time.

It was a tiny plane … even though I paid for upgrade, no internet… no plug ins, no entertainment… 👎🏻

Alaska continues to provide one of the best domestic US airline experiences.

I liked the fast internet and twice serving of snacks and drinks. Paid food options could have included more.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

Rated entertainment as Mediocre as there were major problems with the Infotainment system that took probably a half hour for them to fix.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

They were an hour late and they didn’t have my wheelchair for me

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

The flight and boarding were easy peasy. I was traveling with my 4-year-old, so a smooth boarding experience was especially appreciated. My only piece of feedback is really about where our gate was in O'Hare. They've shoved four gates into a tiny corner of the B terminal and there isn't early enough room or seating for everyone. Not United's problem, but did dent the overall experience.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

There was no screens on board AND the WiFi didn’t work. My seat was broken and couldn’t recline so I couldn’t even sleep. The flight attendants didn’t offer anything to make it more comfortable. It was such an old cramped plane, when the person in front of me reclined I couldn’t even open my tray table. All the United ads talk about guaranteeing everyone gets a screen!

The Wi-Fi was unavailable on this flight for some reason.

On time take off…US cabins look tired and need of refresh!

Fantastic. Smooth boarding with an infant. Never experienced it with any other carriers.

This was a Lufthansa flight, not United. The CSA at the counter, Ashley, was not only incompetent, but quite rude. Me and two other PAX waited over 7 minutes standing in front of her and another CSA and they ignored us. We joked that we must have accidently taken invisibility pills. She could have at least said "I'll be with you in a moment, I'm currently....". I could go on about how rude she and the other CSAs were (whispering, not communicating with me, blaming the situation on others, etc.). She would not work for me. Then, she gave me literally the worst seat on the plane. the worst. My seat kept getting bumped (rammed twice by the crew with their carts and about every 5 minutes by someone using the bathroom), listening to the bathroom all night, crowded seat, etc.

My seat was broken. WiFi didn’t work. Gate crew at HOU were rude and condescending. Treated all the passengers badly. Bad experience, United.

First flight of the day… MINIMUM FUEL! 15 minute landing delay at HOU due to fog turned into a 2+ hour delay! Rather than circle, they had to divert to another city to refuel! Sat on tarmac at Austin to refuel. We ALL missed our connections! The crew, including pilots, were clueless. Crew was really a mess. At HOU, Untied employees were exceedingly rude to all. It was pitiful.

An hour and a half late is UNACCEPTABLE. The negative impact to our family is unconscionable. And for the price we were forced to pay...

The boarding process and flight were great. However, I waited about 40 minutes for my luggage. It did not come up on the designated belt. Instead, everyone’s bags were on a cart. Not sure what the issue was, but we were not informed until another passenger went looking for her bags and found them.

There were delays on both ends. It made it less than excellent. This plane was great though

AA1537 the AC was not working properly. It was very hot and uncomfortable.

Worst experience flying American Airlines. I fly with them often, so I was super disappointed in the service I received at gate 30 in LGA on May 24, mid-day. The flight was delayed twice. I was patiently waiting in the American Airlines lounge when I received the notice on my app that the plane was boarding 45 minutes before its newly re-scheduled take off of 4 pm (from the orginal 1:45 pm then 3:00 pm). It took me 5 min to travel from the lounge to the gate and when I arrived there at 3:20 flight gate attendant told me the flight had closed and that they announced for passengers multiple times. I showed them the notification on my app and they were really rude and unempathetic. The person who rescheduled my flight at customer service wasn't any happier but was at least helpful in getting me on the next flight.

Flight was 1/2 hour delayed leaving Phoenix. Otherwise it was an average flight. Flight crew on this trip was very nice.

Everything was great except for the wifi was junk. Crew was super friendly and helpful

Was lucky to have a employee at the AA checkin counter that had compassion and understood they ordeal that we went through with our original flight being diverted, needing to stay in the aircraft and then flying to the original destination; adding hours to the trip and forcing us to miss our connection and our rebooked connection. She was able to get up on standby on the highest priority on the next flight to the closest airport we need to be at and it all worked out despite being many hours late.

Delayed so that missed connecting flight. Connecting flight was also delayed on the tarmac but they closed the gate before the rescheduled time.

Attendants were rude. Scowling. Seats were miserable and we paid extra.

Took off over an hour late with multiple mechanical issues. Gate agent in Dallas was lazy and was slow as molasses. Had a line 10 people long. Spirit bad..

9hrs delay and didn’t provided anything until after flight landed $75 voucher for fiuture travel no meals or anything.

It was ridiculously hard to check in for the flight, and Frontier charged us a LOT of money to have a carry on suitcase, and then told everyone we could not carry on bags and had to check them through at the gate, and didn't refund the extra money we paid to have the suitcase as carry on.

I had a terrible experience with Frontier. I arrived before the 60 minute cut off and was told that Frontier has a two hour window for bags. I was then told the next available flight wasn’t until the end of the day (I had booked a 6am flight). I took a look around and saw other people being told that they could not board their flights or that they had to pay additional fees. I opted to rebook on American Airlines. There’s absolutely no straightforward way to contact Frontier, so this ticket was a complete waste of money. Oh - and the kicker is that the lady lied about the two hour cut off.

Frontier won’t help you at the airport without paying $25. Carry on was $75. Then you get on the plain and every beverage or snack is also a charge. Seats are hard and real packed in. I would never fly them again.

Worst experience I have seen. The flight was cancelled without any reason.

My experience with frontier staff at the Denver airport was absolutely horrible. The manager on duty was even worst if was the worst experience I have ever had, I have never been treated so poorly as a customer in my life! The staff was extremely rude, eye rolls and attitude and then refusal to help me at all. I wish I could never fly frontier again that’s how horrible it was!

The Frontier app wasn’t working. So I could not pay for a carry on the week prior to flying. They charged me 99$ at the gate to carry on a duffle bag.

Good for the price. My only complaint is that the pilot should keep the air flowing while passengers are waiting to getting out of airplane.

Plane could have been more on time. More leg room .

I arrived 1 hour prior to boarding, and they said I was too late for a domestic flight. First time I heard that :-(

Book cheap flights from St. Louis to Portland

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Portland found on KAYAK in the last 72 hours.
8/28Wed
2 stopsSpirit Airlines
26h 09mSTL-PDX
$122
8/2Fri
1 stopFrontier
10h 45mSTL-PDX
$124
6/18Tue
2 stopsFrontier
21h 51mSTL-PDX
$125
6/28Fri
2 stops
34h 53mSTL-PDX
$127
8/2Fri
2 stopsFrontier
22h 03mSTL-PDX
$134
6/5Wed
2 stops
12h 38mSTL-PDX
$139
6/29Sat
1 stopFrontier
12h 42mSTL-PDX
$141
6/19Wed
3 stopsSpirit Airlines
24h 09mSTL-PDX
$150
6/15Sat
2 stopsUnited Airlines
11h 55mSTL-PDX
$293
6/21Fri
3 stopsUnited Airlines
14h 58mSTL-PDX
$604

Search by stops

Search by airline

Search by price

Last minute flights from St. Louis to Portland

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 Portland that are departing in the next 10 days.
6/1Sat
multi-stopFrontier
15h 07mSTL-PDX
6/6Thu
multi-stopFrontier
6h 44mPDX-STL
$190
6/1Sat
multi-stopFrontier
25h 16mSTL-PDX
6/7Fri
multi-stopFrontier
23h 44mPDX-STL
$195
6/3Mon
multi-stopDelta
6h 52mSTL-PDX
6/8Sat
multi-stopDelta
6h 13mPDX-STL
$238
6/3Mon
multi-stopDelta
6h 52mSTL-PDX
6/11Tue
multi-stopDelta
5h 39mPDX-STL
$290
6/3Mon
multi-stopAmerican Airlines
6h 45mSTL-PDX
6/8Sat
multi-stopAmerican Airlines
7h 36mPDX-STL
$297
6/3Mon
multi-stopSpirit Airlines
21h 00mSTL-PDX
6/7Fri
multi-stopSpirit Airlines
15h 35mPDX-STL
$420
6/4Tue
multi-stopUnited Airlines
6h 55mSTL-PDX
6/15Sat
multi-stopUnited Airlines
5h 49mPDX-STL
$454
6/4Tue
multi-stopUnited Airlines
7h 40mSTL-PDX
6/11Tue
multi-stopUnited Airlines
9h 45mPDX-STL
$459
6/1Sat
multi-stopSpirit Airlines
25h 26mSTL-PDX
6/7Fri
multi-stopSpirit Airlines
15h 35mPDX-STL
$524
6/3Mon
multi-stopAmerican Airlines
9h 52mSTL-PDX
6/7Fri
multi-stopAmerican Airlines
9h 15mPDX-STL
$871

Search by stops

Search by airline

Search by price

St. Louis - Portland Flights

Departure:

St. Louis (STL)United States

Destination:

Portland (PDX)United States

Return flight deals:

Portland - St. Louis

Cabin classes: