$120 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 9/10. 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$275
Eugene
Eugene1 stop$377
Redmond
Redmond1 stop$425
Medford
Medford2 stops$402
Boise
Boise1 stop$284
Portland
Portland1 stop$275
Eugene
Eugene1 stop$377
Redmond
Redmond1 stop$425
Medford
Medford2 stops$402
Boise
Boise1 stop$284

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

Wed, Aug 5 - Wed, Aug 12
Frontier Logo
7:03 pm - 6:04 pm
STL
-
PDX
25h 01m
1 stop
Frontier Logo
5:21 pm - 7:23 pm
PDX
-
STL
24h 02m
1 stop
$275Frontier
Thu, Sep 10 - Mon, Sep 14
Frontier Logo
12:46 pm - 2:57 pm
STL
-
BOI
27h 11m
1 stop
Frontier Logo
3:52 pm - 11:51 am
BOI
-
STL
18h 59m
1 stop
$284Frontier
Sat, Aug 8 - Mon, Aug 10
Southwest Logo
8:30 am - 10:40 am
STL
-
PDX
4h 10mnonstop
Southwest Logo
11:30 pm - 9:35 am
PDX
-
STL
8h 05m
1 stop
$309Southwest
Tue, Sep 1 - Tue, Sep 8
Alaska Airlines Logo
6:35 am - 2:22 pm
STL
-
BOI
8h 47m
1 stop
Alaska Airlines Logo
4:20 pm - 2:21 pm
BOI
-
STL
21h 01m
1 stop
$363Alaska Airlines
Tue, Oct 20 - Tue, Oct 27
Delta Logo
7:55 pm - 11:53 pm
STL
-
EUG
5h 58m
1 stop
Delta Logo
4:40 pm - 12:36 am
EUG
-
STL
5h 56m
1 stop
$377Delta
Tue, Oct 20 - Tue, Oct 27
Delta Logo
9:45 am - 3:58 pm
STL
-
EUG
8h 13m
2 stops
Delta Logo
4:40 pm - 12:36 am
EUG
-
STL
5h 56m
1 stop
$382Delta
Tue, Jul 21 - Tue, Jul 28
Southwest Logo
4:00 pm - 10:20 pm
STL
-
EUG
8h 20m
2 stops
Southwest Logo
5:25 am - 6:15 pm
EUG
-
STL
10h 50m
1 stop
$388Southwest
Tue, Aug 25 - Wed, Aug 26
Alaska Airlines Logo
6:35 am - 1:37 pm
STL
-
EUG
9h 02m
1 stop
Alaska Airlines Logo
6:05 am - 2:06 pm
EUG
-
STL
6h 01m
1 stop
$407Alaska Airlines
Tue, Jul 7 - Tue, Jul 14
United Airlines Logo
5:10 am - 12:04 pm
STL
-
MFR
8h 54m
2 stops
United Airlines Logo
6:35 pm - 8:49 am
MFR
-
STL
12h 14m
2 stops
$517United Airlines
Mon, Jul 27 - Fri, Jul 31
United Airlines Logo
4:48 pm - 9:16 pm
STL
-
MFR
6h 28m
1 stop
United Airlines Logo
6:35 pm - 8:39 am
MFR
-
STL
12h 04m
2 stops
$522United 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.

How much is a round-trip flight from St. Louis to Oregon?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Oregon departing in August.

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 5 days was to Portland, at $281 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 5 days was $281.

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

The average price for all round-trip flights from St. Louis to Oregon depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Oregon is generally in the evening, when round-trip flights cost $444 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 $520.

Can I save money by flying with a layover from St. Louis to Oregon?

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.

No, with an average price for the route of $462, prices are generally cheapest when you fly direct.

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 December, when tickets cost $94 (return) on average. On the other hand, the most expensive months are November and May, when the average cost of round-trip tickets is $228 and $206 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 Monday, as it's usually the priciest day. When flying back from Oregon, Friday 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 52% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$120
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly with an average 3% increase in price.
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.

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.
7.9
Alaska AirlinesOverall score based on 12563 reviews
7.8Comfort
8.5Crew
7.0Entertainment
7.0Food
8.1Boarding
Airline reviews

Both flights were on time and without in-flight issues. Although we had to check our carry-on bags at the last minute (cabins were full, no more room), our bags were on the baggage carousel very quickly. (Happened both ways.) Staff was friendly. Boxed water tasted weird (a little like cardboard?) but not a huge deal. Overall good experience.

10.0 ExcellentAnonymous, Jun 2026
LAX - EUG
Read more Alaska Airlines reviews

Both flights were on time and without in-flight issues. Although we had to check our carry-on bags at the last minute (cabins were full, no more room), our bags were on the baggage carousel very quickly. (Happened both ways.) Staff was friendly. Boxed water tasted weird (a little like cardboard?) but not a huge deal. Overall good experience.

Someone rebooked my Alaska flight to a much later Delta flight. Now I am sitting at the Seattle airport after a long international flight and have to wait another 4 hours even though I would have been able to catch my initial flight

They lost my bag and 24 hours later have yet to find it

Long delay, no gate agent at deplaning waited 15 mins at the gate. Baggage claim was wrong carousel and over 20 mins after arrival

It was a very short flight so there really wasn’t any entertainment my. The little pretzels were good though and the cabin crew was awesome.

Flight delayed Didn’t send second leg of trip itemerary First class was fair, but not great.

Short trip, was nice to have a drink on the short flight still.

Nice to get moved from a middle seat to an aisle seat upon request, but why wasn’t I put in an aisle seat to begin with? The flight was not full.

They called me 2 hours before my original flight from SFO was to depart to let me know it was delayed and that I would miss my connection. They then rebooked on a different flight leaving a half hour earlier to a different connecting airport, so that I would not miss my connection. It all worked out and I arrived at my destination without a problem and 15 minutes earlier than the original flight would have. Nice!

Made our reservations 6 months ago. When we arrived at the airport we were informed they no longer have assigned seating. We were placed in the last row next to the restrooms. Our seats did not recline. I do not like the fact you are assigning seats. I don’t feel it’s fair. People who make last minute reservations sit in the middle seats. It’s did Southwest now have assigned seating and you assign seats. Even Southwest was more fair than Alaska.

The flight was late. The crew was rude. There was no food. Cramped and uncomfortable. Nothing about this flight was good.

Crew was rude, flight was late, wifi didn't work, no food, basically nothing about this flight was good.

It was just okay, no frills, basic transportation with no luxury. No screens on the seats, no water or drinks on a short flight. Full flight but at least it was on time.

Flight was constantly delayed with significant changes in time, it was supposed to get to Colorado Springs at 8:30 PM but it got there after midnight.

Over a 3 hour flight. The turbulence was almost imperceptible except for 2 short periods which were not bad and over quickly. The attendants claimed "Safety first" and sat looking at their phones for 3 hours with no drink or snack service. This isn't the first time with Southwest. I thinkit may be there new plan of operation. Oh, and it was June 18, Southwest's Birthday which offered free drinks. NOT.

Flight was delayed, full flight and I had to change gates. Southwest flights are always late later in the day.

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

It was great. The gate staff were very helpful in Portland when my son forgot his rolling bag and had to go back to get it just in time to make it on the plane. We really appreciate that. Great job!

Airline is not very senior friendly. Flights are late, forcing us to run to the connecting flight. Food is awful. Wish they would go back to pretzels and peanuts. During flight, pressurization isn’t quite right and all of our ears get plugged. Everything is nickel and dime, charging for boarding, seat selection and legroom. While a screen at the desk in the gate area says check your roll on bag now for free due to space limitation, the employee at the desk will not check the bag without a $100 fee. Insane.

Kayak could’ve posted the correct gate number. Almost missed my flight.

I thought the service was very nice and pleasant. There were no hiccups and no issues so overall a good experience.

Very good flight. Crew was great. No issues and we even arrived early.

The flights are constantly late anymore, and they won't even give you a glass of water on the plane. For years, they were able to do a service on this flight from Atlanta to Knoxville and Knoxville Atlanta now they say it's too short of a flight. You can't even get a quick drink of water.

Flight got canceled 4 times, missed my connecting flight due to delays, have to wait to go home tomorrow

Third flight in two months where the crew was not there. Comfort seating does not guarantee overhead bin space. Passengers with children are allowed on the plane first - if you are flying to and from Orlando, this means half the plane has boarded before you get on. And somehow all the bin space is taken up. 3 out of 5 flights have had issues with equipment or procedure. Some of these instances caused the flight to be delayed because of a "nuisance" light. One time it was a bag that had been brought on board but did not belong to anyone so we had to return to the gate. Last night we were told the "AC" on the plane doesn't work well and we're 10th for take off- because the crew was late - and that it will get cool when we're in the air. Not sure if this is usual, but I didn't think flight crew could jump seat in first class. Movie and TV selection has not been refreshed for several months- flying one to two round trips each month easily exhausts the list of content.

Great experience nice pilot very soft and easy landing and take off

We sat on the runway for over an hour before departure. That was unwelcome.

Horrible. Faucet in sink not working, wifi not working. Didn’t bring food or snacks

Flight was delayed before take off and at landing. Baggage took 20 minutes. Flight crew would not serve full soft drink and had to ask multiple times before receiving water.

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Great experience. Boarding was fast, staff were very nice and funny, everything at the seat worked well.

Boarding was great, and the crew were very friendly. The seats must have been a bit on the older side and you could feel some of the seat components through the padding. Also, the plugs did not work on the row's entertainment screen or charging ports. Checked bag was transferred for connecting flight, and we appreciated how early we had the connecting gate information.

Lost one piece of luggage even though I checked in 2.5 hours before the flight

For the expense of first class, the seats could have been nicer and higher tier snacks would have been nice.

The boarding process on the departure from LA was rather slow even though I was in Group 1. For first class, I was not expecting to have to pay for Wi-fi but I did and then the wi-fi was spotty. The entree was surprisingly good and so that was a pleasant surprise. However, once I got to Houston, it was terrible. Unfortunately there was bad weather but the constant gate changes for my connecting flight was difficult to manage due to having to navigate back and forth between different terminals.

They delayed the flight 3 hours because it wasn't full they moved us to 5 different gates probably the worst airline ever not even spirit is this bad.

Very easy ! Use the kiosk and bag drop and right to security within 10 min

Checking bag at terminal was horrible. No agents to check us in and only 1 kiosk working. Boarding went ok. Crew onboard was very scattered rained. Missed our row while serving and then didn’t see them hardly again.

Crew was amazing, takeoff wonderful. The bathroom was disgusting from before takeoff the odor made the flight uncomfortable as you could smell the bathroom from the center of the plane where we were sitting. Smelled like raw sewage. My daughter was throwing up as we landed due to the smell and horrible turbulence as we approached Newark.

Airline tickets are not cheap. You expect reliable competent service. Thanks to canceled flights and botched transfers we arrived at our destination two days late. This is not acceptable

Maybe focus more on delivering a good product vs selling me a damn credit card

American Airlines is a great dependable airline, on time arrival and departure with polite crew and staff.

I think since I am an AA Advantage member, my checked bags should have been free, but I paid for all 4 of us.

This flight moved Gates several times in a short time period, from B to C, which required a substantial walk or rail ride. Then the flight was delayed more than 2 hours and the food was subpar compared to other flights.

Flight was delayed multiple times without giving any particular reason and the only thing that was communicated was that 'Aircraft is getting ready'. I was stuck at SFO airport for 15 hours and finally took Southwest Airlines flight back home to Dallas.

Hydraulic leak caused the flight to be cancelled. Auto system scheduled us on a 3 am flight. Wevhsedvrebook on the app and hit schedules later in the afternoon. Our luggage per gate and ticket agent would be rescanned and put in our new flight. Did not happen. Our luggage stayed in hsv. Baggage claim in wash dc unable to help. We filed a claim. Several emails about our luggage were in conflict with one another. Called as baggage and was on hold 30 minutes. Oscar said one of 2 was out fir delivery then cancelled. About 45 minutes later both pieces were delivered. Their system is suspect

I was not clear if food was offered or not.

Flight cancelled. Twice. And no communication. No gate agent. Went past boarding time and had to go and see email from AA. Airport communication was bad

I love the e fact that the staff communicated swiftly when my flight was delayed and gate number changed

It was awful. The communication between corporate and the crew on the ground left more to be desired. The crew even said that Corporate was waiting on answers because they themselves didn't know. Every hour, there was a new excuse. I also understood that passengers were angry, but the crew should have done a better job at crowd control. There was a racial exchange between passengers that could've been avoided has the crew acted sooner.

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

Information on your arrival and departure airports