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Cheap flights from St. Louis to Portland from $54

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Portland departing on 1/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to Portland

Cheap round-trip flights

These are some of the best round-trip flight deals from St. Louis to Portland that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from St. Louis to Portland.

Cheap last minute flights

Planning a quick getaway from St. Louis to Portland? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Portland, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from St. Louis to Portland

Find recent round-trip train or bus tickets from St. Louis to Portland.

All round-trip flight deals to Portland

The cheapest plane tickets to Portland found on KAYAK recently.
6:46 pm - 12:15 amSTL-PDX
7h 29m1 stop
11:19 am - 7:34 pmPDX-STL
6h 15m1 stop
$126Frontier
Find Deal
Wed, Jan 8 - Fri, Jan 10
8:34 pm - 9:47 amSTL-PDX
15h 13m1 stop
12:03 pm - 9:16 amPDX-STL
19h 13m1 stop
$129Frontier
Find Deal
Thu, Jan 9 - Thu, Jan 16
5:03 am - 11:06 amSTL-PDX
8h 03m1 stop
5:00 am - 1:42 pmPDX-STL
6h 42m1 stop
$198American Airlines
Find Deal
Thu, Jan 23 - Mon, Jan 27
7:00 am - 1:16 pmSTL-PDX
8h 16m1 stop
10:01 pm - 8:51 amPDX-STL
8h 50m1 stop
$212American Airlines
Find Deal
Wed, Feb 12 - Sun, Feb 16
2:49 pm - 8:46 pmSTL-PDX
7h 57m1 stop
3:00 pm - 1:53 pmPDX-STL
20h 53m1 stop
$226Alaska Airlines
Find Deal
Thu, Jan 23 - Mon, Jan 27
1:45 pm - 8:37 pmSTL-PDX
8h 52m2 stops
7:00 am - 5:36 pmPDX-STL
8h 36m1 stop
$231United Airlines
Find Deal
Tue, Feb 4 - Sat, Feb 8
4:36 pm - 11:13 pmSTL-PDX
8h 37m1 stop
9:00 am - 6:09 pmPDX-STL
7h 09m1 stop
$238United Airlines
Find Deal
Tue, Jan 7 - Wed, Jan 15
6:59 pm - 11:51 pmSTL-PDX
6h 52m1 stop
12:59 am - 10:59 amPDX-STL
8h 00m1 stop
$252Delta
Find Deal
Thu, Feb 20 - Mon, Feb 24
2:49 pm - 9:53 pmSTL-PDX
9h 04m1 stop
11:00 am - 11:59 pmPDX-STL
10h 59m2 stops
$254Alaska Airlines
Find Deal
Wed, Jan 29 - Wed, Feb 12
5:00 pm - 10:52 pmSTL-PDX
7h 52m1 stop
1:36 pm - 11:09 pmPDX-STL
7h 33m2 stops
$265Delta
Find Deal
Sat, Feb 1 - Sat, Feb 8
6:46 pm - 12:15 amSTL-PDX
7h 29m1 stop
$54Frontier
Find Deal
Wed, Jan 8
8:34 pm - 9:47 amSTL-PDX
15h 13m1 stop
$65Frontier
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Thu, Jan 9
5:00 pm - 11:54 pmSTL-PDX
8h 54m1 stop
$99Delta
Find Deal
Mon, Jan 27
2:15 pm - 6:17 pmSTL-PDX
6h 02m1 stop
$113Delta
Find Deal
Tue, Mar 18
8:00 am - 6:05 pmSTL-PDX
12h 05m2 stops
$118United Airlines
Find Deal
Tue, Jan 28
2:49 pm - 8:46 pmSTL-PDX
7h 57m1 stop
$142Alaska Airlines
Find Deal
Fri, Jan 10
9:44 am - 6:05 pmSTL-PDX
10h 21m2 stops
$147United Airlines
Find Deal
Thu, Jan 9
2:49 pm - 9:53 pmSTL-PDX
9h 04m1 stop
$153Alaska Airlines
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Thu, Jan 16
8:45 am - 5:15 pmSTL-PDX
10h 30m2 stops
$184Southwest
Find Deal
Mon, Jan 27
10:15 am - 7:20 pmSTL-PDX
11h 05m2 stops
$202Southwest
Find Deal
Fri, Jan 17
6:49 pm - 3:44 pmSTL-PDX
22h 55m1 stop
12:45 pm - 8:13 amPDX-STL
17h 28m1 stop
$404Frontier
Find Deal
Fri, Dec 20 - Tue, Dec 24
6:04 am - 11:30 amSTL-PDX
7h 26m1 stop
2:04 pm - 10:06 pmPDX-STL
6h 02m1 stop
$430Delta
Find Deal
Sun, Dec 22 - Tue, Dec 24
4:43 pm - 9:14 pmSTL-PDX
6h 31m1 stop
1:34 pm - 12:28 amPDX-STL
8h 54m1 stop
$489United Airlines
Find Deal
Sun, Dec 22 - Tue, Dec 24
6:30 am - 3:09 pmSTL-PDX
10h 39m1 stop
12:59 am - 10:53 amPDX-STL
7h 54m1 stop
$540American Airlines
Find Deal
Mon, Dec 23 - Fri, Dec 27
7:04 am - 1:23 pmSTL-PDX
8h 19m1 stop
12:59 am - 10:45 amPDX-STL
7h 46m1 stop
$558American Airlines
Find Deal
Sat, Dec 21 - Mon, Dec 30
4:05 pm - 10:25 pmSTL-PDX
8h 20m2 stops
2:55 pm - 11:00 pmPDX-STL
6h 05m1 stop
$603Southwest
Find Deal
Fri, Dec 20 - Tue, Dec 24
4:05 pm - 10:25 pmSTL-PDX
8h 20m2 stops
1:10 pm - 8:20 pmPDX-STL
5h 10m1 stop
$608Southwest
Find Deal
Sun, Dec 22 - Tue, Dec 24
8:00 am - 8:23 pmSTL-PDX
14h 23m2 stops
7:45 pm - 10:47 amPDX-STL
13h 02m2 stops
$823United Airlines
Find Deal
Mon, Dec 23 - Sat, Dec 28
6:30 am - 7:31 amSTL-PDX
27h 01m2 stops
6:59 pm - 9:36 amPDX-STL
12h 37m2 stops
$962Alaska Airlines
Find Deal
Sat, Dec 21 - Tue, Dec 31
7:24 am - 5:25 pmSTL-PDX
12h 01m2 stops
7:40 am - 10:43 pmPDX-STL
13h 03m2 stops
$1,049Alaska Airlines
Find Deal
Sat, Dec 21 - Sat, Dec 28

Frontier flights from St. Louis to Portland

Our best Frontier deals on St. Louis to Portland flight tickets
Frontier
Jan 8
STL6:46 pmLambert-St Louis
7h 29m
1 stop
PDX12:15 amPortland
Jan 10
PDX11:19 amPortland
6h 15m
1 stop
STL7:34 pmLambert-St Louis
Frontier
Jan 9
STL8:34 pmLambert-St Louis
15h 13m
1 stop
PDX9:47 amPortland
Jan 16
PDX12:03 pmPortland
19h 13m
1 stop
STL9:16 amLambert-St Louis
Frontier
Jan 9
STL8:34 pmLambert-St Louis
15h 13m
1 stop
PDX9:47 amPortland
Jan 16
PDX12:03 pmPortland
19h 13m
1 stop
STL9:16 amLambert-St Louis

Alaska Airlines flights from St. Louis to Portland

Our best Alaska Airlines deals on St. Louis to Portland flight tickets
Alaska Airlines
Jan 23
STL2:49 pmLambert-St Louis
7h 57m
1 stop
PDX8:46 pmPortland
Jan 27
PDX3:00 pmPortland
20h 53m
1 stop
STL1:53 pmLambert-St Louis
Alaska Airlines
Jan 29
STL2:49 pmLambert-St Louis
9h 04m
1 stop
PDX9:53 pmPortland
Feb 12
PDX11:00 amPortland
10h 59m
2 stops
STL11:59 pmLambert-St Louis
Alaska Airlines
Apr 25
STL7:00 amLambert-St Louis
7h 29m
1 stop
PDX12:29 pmPortland
Apr 29
PDX7:35 pmPortland
16h 17m
1 stop
STL1:52 pmLambert-St Louis

See travel insights to Portland from

How to get the cheapest flight ticket from St. Louis to Portland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Portland?

The cheapest month to fly to Portland from St. Louis is in September. Flight prices, which tend to average around $306, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in September, then you should wait until November to fly from St. Louis, when ticket prices are also cheap, with an average price of $316.

What is the cheapest day to depart on your flight to Portland?

The cheapest day to depart on your flight to Portland is on a Tuesday when prices can be found for as low as $324. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Portland is Monday, with ticket prices averaging around $396.

What is the cheapest time of day to depart on your flight to Portland?

The cheapest time of day to fly to Portland is in the evening when flights can be purchased for as low as $275. At noon is when there is more demand to fly to Portland, so prices are often more expensive at around $397 per ticket.

What is the cheapest Lambert-St Louis to Portland flight route?

Fly from Lambert-St Louis to Portland for the best Lambert-St Louis - Portland flight prices

How far in advance should I book a flight to Portland?

The ideal time to book your flight to Portland is 10 days in advance when prices tend to average $368. However, in the past 72 hours, people saw flights from St. Louis for as low as $202.

What cabin class options are available on Lambert-St Louis to Portland flights?

There are 1 cabin classes available to choose from on Lambert-St Louis to Portland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to Portland flights?

You could potentially save up to 54% on your flight if you consider stops on a St. Louis to Portland flight.

How have St. Louis to Portland flight prices changed over time?

As of December 2024, prices for St. Louis to Portland flights are approximately 4% cheaper when compared to flights at the same time last year.

When to book flights from St. Louis to Portland

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Portland according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Portland (STL to PDX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Portland

Best Price Found

$54

Fastest flight time

4h 10m

Direct flights

None

Airports in Portland

1 airport
The best one-way flight to Portland from St. Louis in the past 72 hours is $54. The best round-trip flight deal from St. Louis to Portland found on momondo in the last 72 hours is $126.
The fastest flight from St. Louis to Portland takes 4h 10m
There are no direct flights from St. Louis to Portland. Popular non-direct route for this connection is Lambert-St Louis Airport - Portland Airport.
There is 1 airport near Portland: Portland (PDX)

  • How far is Lambert-St Louis to Portland by plane?

    Portland is 1718.1 mi away from Lambert-St Louis. Typically, this will take 4h 10m by plane in normal conditions.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Portland Airport?

    Prices for flights from Lambert-St Louis Airport to Portland Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Portland Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Portland Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Portland Airport.

  • What documentation or ID do you need to fly to Portland Airport?

    The travel and health documents you'll need for your trip to Portland Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portland Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from St. Louis to Portland?

  • What is the most popular airline from St. Louis to Portland?


Best airlines flying from St. Louis to Portland

Compare and see reviews for airlines that fly from St. Louis to Portland with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $94Free CancellationRating
6.3
8,119 reviews
Search Spirit Airlines flights
FrontierPriceFrom $108Free CancellationRating
6.1
3,479 reviews
Search Frontier flights
American AirlinesPriceFrom $181Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $215Free CancellationRating
8.0
9,552 reviews
Search Alaska Airlines flights
DeltaPriceFrom $216Free CancellationRating
8.0
8,604 reviews
Search Delta flights
United AirlinesPriceFrom $278Free CancellationRating
7.4
9,059 reviews
Search United Airlines flights
SouthwestPriceFrom $306Free CancellationRating
8.1
4,848 reviews
Search Southwest flights
  • United Airlines Flights From St. Louis to Portland

    United Airlines is one of the most popular airlines flying from St. Louis to Portland, operating 1 flight/week on average for this route. A good United Airlines flight deal for St. Louis to Portland starts from $278 round-trip, up to an average price of $443. Our users have rated United Airlines at 7.4/10.


Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Portland?

Finding the right flight to Portland from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Portland quick and easy, saving you time and money.

Can I find flights from St. Louis to Portland with flexible booking policies on momondo?

Flights from St. Louis to Portland with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to Portland?

Once all potential St. Louis to Portland flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from St. Louis to Portland right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Portland, momondo offers a useful price alert feature which will track prices for flights to Portland from St. Louis and alert you when they change.


An easier way to manage your Portland trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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