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Cheap flights from St. Louis to Portland from $55

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 2/1. 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 from St. Louis to Portland

The cheapest plane tickets from St. Louis to Portland found on KAYAK recently.
7:09 pm - 12:07 amSTL-PDX
6h 58m1 stop
7:35 am - 9:16 amPDX-STL
23h 41m1 stop
$120Frontier
Find Deal
Wed, Jan 29 - Tue, Feb 4
7:09 pm - 12:07 amSTL-PDX
6h 58m1 stop
10:37 am - 7:31 pmPDX-STL
6h 54m1 stop
$130Frontier
Find Deal
Wed, Jan 29 - Thu, Feb 6
6:59 pm - 11:51 pmSTL-PDX
6h 52m1 stop
6:05 am - 4:53 pmPDX-STL
8h 48m1 stop
$227Delta
Find Deal
Sun, Feb 23 - Tue, Mar 4
4:45 pm - 9:00 pmSTL-PDX
6h 15m1 stop
6:00 am - 4:31 pmPDX-STL
8h 31m2 stops
$232United Airlines
Find Deal
Tue, Apr 15 - Sat, Apr 19
5:00 pm - 10:19 pmSTL-PDX
7h 19m1 stop
5:20 pm - 12:37 amPDX-STL
5h 17m1 stop
$237Delta
Find Deal
Sat, Apr 12 - Mon, Apr 14
7:00 am - 12:33 pmSTL-PDX
7h 33m1 stop
1:33 pm - 11:59 pmPDX-STL
8h 26m1 stop
$247Alaska Airlines
Find Deal
Sun, Feb 23 - Fri, Mar 7
3:11 pm - 8:51 pmSTL-PDX
7h 40m1 stop
11:50 am - 11:59 pmPDX-STL
10h 09m1 stop
$312Alaska Airlines
Find Deal
Mon, Apr 14 - Thu, Apr 17
3:32 pm - 10:35 pmSTL-PDX
9h 03m1 stop
7:46 pm - 10:47 amPDX-STL
13h 01m2 stops
$322United Airlines
Find Deal
Mon, Feb 24 - Sat, Mar 1
6:11 pm - 10:37 pmSTL-PDX
6h 26m1 stop
11:59 pm - 8:46 amPDX-STL
6h 47m1 stop
$329American Airlines
Find Deal
Tue, Jul 15 - Wed, Jul 30
5:45 am - 12:32 pmSTL-PDX
8h 47m1 stop
3:00 pm - 11:24 pmPDX-STL
6h 24m1 stop
$380American Airlines
Find Deal
Sun, Apr 6 - Thu, Apr 10
7:09 pm - 12:07 amSTL-PDX
6h 58m1 stop
$55Frontier
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Sat, Feb 1
8:52 pm - 8:40 amSTL-PDX
13h 48m1 stop
$61Frontier
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Sat, Mar 1
7:40 am - 12:28 pmSTL-PDX
6h 48m1 stop
$114Delta
Find Deal
Sun, Feb 16
6:59 pm - 11:51 pmSTL-PDX
6h 52m1 stop
$119Delta
Find Deal
Fri, Feb 14
3:11 pm - 8:51 pmSTL-PDX
7h 40m1 stop
$134Alaska Airlines
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Wed, Apr 16
3:30 pm - 10:55 pmSTL-PDX
9h 25m2 stops
$151United Airlines
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Mon, Mar 10
4:39 pm - 12:35 amSTL-PDX
9h 56m2 stops
$155United Airlines
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Sun, Feb 16
6:29 am - 12:52 pmSTL-PDX
8h 23m1 stop
$165American Airlines
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Wed, Jun 11
6:44 am - 12:25 pmSTL-PDX
7h 41m1 stop
$179Alaska Airlines
Find Deal
Thu, Apr 17
5:03 am - 11:06 amSTL-PDX
8h 03m1 stop
$237American Airlines
Find Deal
Tue, Jan 28
8:31 pm - 9:45 amSTL-PDX
15h 14m1 stop
7:35 am - 9:16 amPDX-STL
23h 41m1 stop
$315Frontier
Find Deal
Sun, Jan 19 - Tue, Jan 21
8:31 pm - 9:45 amSTL-PDX
15h 14m1 stop
7:35 am - 9:16 amPDX-STL
23h 41m1 stop
$410Frontier
Find Deal
Sun, Jan 19 - Tue, Jan 21
2:49 pm - 8:46 pmSTL-PDX
7h 57m1 stop
1:52 pm - 1:53 pmPDX-STL
22h 01m1 stop
$462Alaska Airlines
Find Deal
Mon, Jan 20 - Mon, Jan 27
7:00 am - 12:30 pmSTL-PDX
7h 30m1 stop
9:00 am - 6:09 pmPDX-STL
7h 09m1 stop
$468United Airlines
Find Deal
Fri, Jan 17 - Fri, Jan 24
6:59 pm - 11:54 pmSTL-PDX
6h 55m1 stop
12:45 am - 10:54 amPDX-STL
8h 09m1 stop
$473Delta
Find Deal
Mon, Jan 20 - Sun, Jan 26
7:00 am - 12:30 pmSTL-PDX
7h 30m1 stop
5:00 am - 3:38 pmPDX-STL
8h 38m2 stops
$478United Airlines
Find Deal
Fri, Jan 17 - Fri, Jan 24
6:30 am - 12:55 pmSTL-PDX
8h 25m1 stop
6:50 am - 4:55 pmPDX-STL
8h 05m2 stops
$516Southwest
Find Deal
Sun, Jan 19 - Tue, Jan 21
3:40 pm - 11:40 pmSTL-PDX
10h 00m1 stop
8:35 am - 5:05 pmPDX-STL
6h 30m1 stop
$549Southwest
Find Deal
Fri, Jan 17 - Thu, Jan 23
6:00 am - 12:55 pmSTL-PDX
8h 55m1 stop
12:45 am - 10:54 amPDX-STL
8h 09m1 stop
$601Delta
Find Deal
Fri, Jan 17 - Wed, Jan 22
6:03 am - 6:21 pmSTL-PDX
14h 18m2 stops
9:47 pm - 1:53 pmPDX-STL
14h 06m2 stops
$1,039Alaska Airlines
Find Deal
Fri, Jan 17 - Mon, Feb 3

Frontier flights from St. Louis to Portland

Our best Frontier deals on St. Louis to Portland flight tickets
Frontier
Jan 29
STL7:09 pmLambert-St Louis
6h 58m
1 stop
PDX12:07 amPortland
Feb 4
PDX7:35 amPortland
23h 41m
1 stop
STL9:16 amLambert-St Louis
Frontier
Jan 29
STL7:09 pmLambert-St Louis
6h 58m
1 stop
PDX12:07 amPortland
Feb 6
PDX10:37 amPortland
6h 54m
1 stop
STL7:31 pmLambert-St Louis
Frontier
Jan 29
STL7:09 pmLambert-St Louis
17h 52m
1 stop
PDX11:01 amPortland
Feb 4
PDX7:35 amPortland
23h 41m
1 stop
STL9:16 amLambert-St Louis

United Airlines flights from St. Louis to Portland

Our best United Airlines deals on St. Louis to Portland flight tickets
United Airlines
Apr 15
STL4:45 pmLambert-St Louis
6h 15m
1 stop
PDX9:00 pmPortland
Apr 19
PDX6:00 amPortland
8h 31m
2 stops
STL4:31 pmLambert-St Louis
United Airlines
Feb 24
STL3:32 pmLambert-St Louis
9h 03m
1 stop
PDX10:35 pmPortland
Mar 1
PDX7:46 pmPortland
13h 01m
2 stops
STL10:47 amLambert-St Louis
United Airlines
Apr 15
STL9:39 amLambert-St Louis
12h 30m
2 stops
PDX8:09 pmPortland
Apr 19
PDX6:00 amPortland
8h 31m
2 stops
STL4:31 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 typical price of a round-trip flight between St. Louis and Portland?

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?

You are more likely to see cheaper flights to Portland from St. Louis when booking 13 weeks ahead of your departure date. In general, you can expect to find flights to Portland for around $370 when searching 13 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland from St. Louis for as low as $285 on momondo.

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.

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

As of January 2025, 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

$55

Fastest flight time

5h 57m

Direct flights

Mon

Airports in Portland

1 airport
The best one-way flight to Portland from St. Louis in the past 72 hours is $55. The best round-trip flight deal from St. Louis to Portland found on momondo in the last 72 hours is $120.
The fastest flight from St. Louis to Portland takes 5h 57m
Direct flights go from St. Louis to Portland on Monday. The only airline offering direct flights is Southwest.
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 5h 57m 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
8,098 reviews
Search Spirit Airlines flights
FrontierPriceFrom $108Free CancellationRating
6.0
3,435 reviews
Search Frontier flights
American AirlinesPriceFrom $178Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $215Free CancellationRating
8.0
9,681 reviews
Search Alaska Airlines flights
DeltaPriceFrom $216Free CancellationRating
8.0
8,511 reviews
Search Delta flights
United AirlinesPriceFrom $259Free CancellationRating
7.4
8,965 reviews
Search United Airlines flights
SouthwestPriceFrom $306Free CancellationRating
8.1
4,659 reviews
Search Southwest flights

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Lincoln City
Seaside
Cannon Beach
Salem
Vancouver
Astoria
Long Beach
Beaverton
Depoe Bay
Hillsboro
Hood River
Tigard
Rockaway Beach
Gresham
Longview
Clackamas
McMinnville
Pacific City
The Dalles
Tillamook

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

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