$69 Find Cheap Flights from St. Louis to Oregon

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 Oregon departing on 4/25. 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 Oregon

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Oregon.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Oregon.
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Flight Deals

Cheap Flights from St. Louis to Oregon

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Portland
Portland1 stop$137
Eugene
Eugene2 stops$304
Redmond
Redmond2 stops$282
Medford
Medford2 stops$253
Boise
Boise2 stops$272
Portland
Portland1 stop$137
Eugene
Eugene2 stops$304
Redmond
Redmond2 stops$282
Medford
Medford2 stops$253
Boise
Boise2 stops$272

Book Cheap St. Louis to Oregon Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Oregon 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 St. Louis to Oregon

Sat, Apr 18 - Sat, Apr 25
Frontier Logo
8:17 pm - 10:20 am
STL
-
PDX
16h 03m
1 stop
Frontier Logo
12:27 pm - 7:21 pm
PDX
-
STL
28h 54m
1 stop
$137Frontier
Sat, Apr 18 - Sat, Apr 25
Frontier Logo
8:17 pm - 10:20 am
STL
-
PDX
16h 03m
1 stop
Frontier Logo
12:27 pm - 7:21 pm
PDX
-
STL
28h 54m
1 stop
$139Frontier
Tue, Apr 14 - Tue, Apr 21
Delta Logo
6:45 pm - 11:53 pm
STL
-
PDX
7h 08m
1 stop
Delta Logo
5:05 pm - 12:25 am
PDX
-
STL
5h 20m
1 stop
$181Delta
Wed, May 13 - Mon, May 18
Southwest Logo
3:55 pm - 10:00 pm
STL
-
PDX
8h 05m
1 stop
Southwest Logo
11:55 pm - 9:30 am
PDX
-
STL
7h 35m
1 stop
$182Southwest
Wed, May 13 - Mon, May 18
Delta Logo
7:59 pm - 11:44 pm
STL
-
PDX
5h 45m
1 stop
Delta Logo
3:10 pm - 11:21 pm
PDX
-
STL
6h 11m
1 stop
$188Delta
Wed, May 13 - Mon, May 18
Southwest Logo
3:55 pm - 10:00 pm
STL
-
PDX
8h 05m
1 stop
Southwest Logo
11:55 pm - 9:30 am
PDX
-
STL
7h 35m
1 stop
$196Southwest
Wed, Mar 25 - Wed, Apr 1
United Airlines Logo
5:15 am - 12:11 pm
STL
-
RDM
8h 56m
2 stops
United Airlines Logo
5:00 am - 1:08 pm
RDM
-
STL
6h 08m
1 stop
$282United Airlines
Sat, Mar 28 - Sat, Apr 4
United Airlines Logo
5:15 am - 10:06 am
STL
-
BOI
5h 51m
1 stop
United Airlines Logo
6:15 am - 1:08 pm
BOI
-
STL
5h 53m
1 stop
$317United Airlines
Wed, Mar 11 - Fri, Mar 13
American Airlines Logo
5:12 am - 3:46 pm
STL
-
YKM
12h 34m
2 stops
American Airlines Logo
6:00 am - 1:51 pm
YKM
-
STL
5h 51m
1 stop
$780American Airlines
Wed, Mar 11 - Fri, Mar 13
American Airlines Logo
5:12 am - 3:46 pm
STL
-
YKM
12h 34m
2 stops
American Airlines Logo
6:00 am - 10:58 pm
YKM
-
STL
14h 58m
2 stops
$842American Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Oregon flights

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

What is the cheapest St. Louis to Oregon flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Oregon from St. Louis found in the last 72 hours was to Portland, at $249 round-trip. The most popular route is from St. Louis (STL) to Portland (PDX), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $249.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Oregon, 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 Oregon is January, when tickets cost $291 (return) on average. On the other hand, the most expensive months are March and July, when the average cost of round-trip tickets is $472 and $396 respectively.

What’s the cheapest day of the week to fly from St. Louis to Oregon?

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

If you are looking for a flight deal from St. Louis to Oregon, look for departures on Tuesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Oregon, Wednesday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Oregon, 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 St. Louis to Oregon, you should book around 4 weeks before departure, which saves you about 35% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$65
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from St. Louis to Portland

FAQs - booking Oregon flights

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

    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 Oregon.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Oregon 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 Oregon?

    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 from St. Louis to Oregon with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Oregon?

    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 from St. Louis to Oregon up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Oregon?

    The cheapest time of day to fly to Oregon is generally in the evening, when round-trip flights cost $379 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Oregon is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $556.

Reviews of the top 5 airlines serving from St. Louis to Oregon

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Oregon. 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 Oregon? 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 11965 reviews
8.1Boarding
7.8Comfort
7.0Entertainment
8.5Crew
7.1Food
Airline reviews

I enjoyed the feet space in comparison to other airlines. The snacks were also better, great service and the pilot greeted and said hi which made me feel safer.

10.0 ExcellentAnonymous, Feb 2026
LAS - PDX
Read more Alaska Airlines reviews

I enjoyed the feet space in comparison to other airlines. The snacks were also better, great service and the pilot greeted and said hi which made me feel safer.

Well the seats were very tight but the plane was very clean, the attendance great and good entertainment. Maybe they had it, but I wanted a map on the app. Thanks

had to be rerouted due to a medical emergency onboard. Alaska crew treated the patient with utmost respect and continued to keep the passengers updated the entire way through, which I appreciate. But it took 4 hours from landing until we were able to be airborne again, causing us to not get into SFO until ~2 am. I understand it was a tough situation for everyone, but that was an indecent wait.

The tray wasn’t cleaned, it had crumbs from the last flight Other than that it was very comfortable by

SBP to PDX 2/17/2026. One person ahead of us at the counter. One ahead of is at TSA. First to board. First row, first class. First to be served. Food and service very good. First off the aircraft. Flight was nice other than some moderately hard bumps on climb out (please find a way to control that!). Air Force landing (none of that Navy slam you to the deck stuff). Wheel chair at the bottom of the ramp waiting for my wife. Luggage out quickly, walked right up to the parking shuttle bus. First stop on the bus. I like the EMB 175 aircraft. This was as close to a perfect flight as I will ever see. Bravo!

Everything was fine. The snacks are a little on the tiny side.

Santa Rosa Airport is the best! Glad to have experienced it.

Delay for switching planes. Then delay after delay (mechanical) after boarding so that we were almost 3 hrs late, getting in at 230am. Crew was good.

Flight attendants made this flight wonderful. They made sure everyone had what they needed and anticipated future needs. They made adjustments as needed. It was clear this was an experienced crew.

Very delayed for seemingly no reason. Made me miss an event

It was canceled. Supposedly weather. But there was no snow in Baltimore. At least we found out before driving to airport

I have not flown Southwest in awhile and had a very pleasant experience. From ticketing to boarding to the flight. The flight left on time and landed ahead of schedule. It won't be so long next time!!

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.

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

An entire day of delays. Cost lots of money. Meals and a hotel.

The WiFi and crew on the plane were good, however, the boarding experience was awful. I paid for the Choice Preferred and was boarded in group 5 so all overhead storage was full. They found room for our luggage, but further back making getting off the plane a nightmare. Also, we were in row 6 and the seats were extremely uncomfortable. Both my daughter and I had no leg room and couldn’t wait to get off the plane.

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

Still need to work out the kinks on the new assigned seating boarding process. Otherwise, a very good flight.

WiFi did not work. Boarding with the new seating assignments took too long. The temperature in the terminal was obnoxious. +/- 80°

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

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!

The staff was fine. The plane was extremely tight, and I paid for the wifi and it did not work at all. I was actually going to ask for a refund.

two hour delay and the Delta representative on the PA system was unable to understand

An awesome flight crew. FC seat cushion just doesn’t cut it for a 3+ hour flight.

2+hrs delay without any reason provided and a cramped flight

We waited an hour on the runway to get a gate in Orlando

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

Flight was delayed due to crew being not on time

Flight crew issues delayed my flight by 2 1/2 hours. Causing me to miss my connection.

The staff on board and gate was nice - a welcome change from the usual. We also arrived early, which was a great benefit, given that it takes 30 minutes plus to get bags at SRQ.

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Everything was great except for the boarding process. Everyone is lining up all at the same time and it’s hard to tell between the groups as they are way too large.

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

Overall we had a good experience during our flight from San Francisco to Houston.

Airport terminal was outdated, flight was on a small jet with no wifi

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

it was a very short flight so my expectations were low.

It's very confusing because Kayak has it as American Airlines, but it was Hawaiian Airlines, but operated by Alaska Airlines. I had to go to the airport for my boarding pass because American said I didn't have any trips.

Smooth flight. From the early boarding and all were on board before departure time and arrived early in ONT. Great crew. Thank you!!!!

Small plane, poor meal choices for first class, bad terminal and boarding experience at LAX

Lack of gluten free options in food service. I have Celiac disease and it appears you no longer offer special meals for people with dietary restrictions. I am a frequent flyer traveling into and out of Omaha airport. I have noticed over the course of several months that although our flight typically arrives ahead of schedule (awesome job AA!) - we typically sit on the runway for several minutes waiting for the ground crew to get in place. Not sure if it is a ground crew issue or a gate availability issue (due to construction at this airport). Seems to be more of a ground crew being on time issue.

Arrived early picked up my bag in a few minutes- great trip - thank you

Flight boarded, departed and landed on time. Excellent service from flight attendant in FIRST

Boarding is always an ordeal. Less dogs on flights. I am highly allergic to dogs and cats. Why are there so many animals these days?

Flight to Tampa was delayed taking off due to plane arriving late but no other issues

There was a delay with the plan which cause the flight to leave later and once arrived in Chicago there was another delay and some passengers missed their connecting flights

Massimo, flight attendant was very authentic, attentive - wonderful. Food/wrap was just okay.

Everything you need to know for your flight from St. Louis to Oregon

Information on your arrival and departure airports