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Cheap flights from St. Louis to Portland from $45

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 5/15. 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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Easily compare round-trip flights from St. Louis to Portland

Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from St. Louis to Portland by changing tabs
Multiple Airlines
May 15
STL11:36 amLambert-St Louis
14h 31m
1 stop
PDX12:07 amPortland
May 20
PDX8:40 amPortland
10h 51m
1 stop
STL9:31 pmLambert-St Louis
Frontier
May 9
STL10:59 pmLambert-St Louis
12h 16m
1 stop
PDX9:15 amPortland
May 11
PDX12:59 amPortland
11h 30m
1 stop
STL2:29 pmLambert-St Louis
Spirit Airlines
Jun 12
STL1:55 pmLambert-St Louis
10h 57m
1 stop
PDX10:52 pmPortland
Jun 18
PDX11:58 amPortland
23h 07m
1 stop
STL1:05 pmLambert-St Louis
Frontier
May 9
STL10:59 pmLambert-St Louis
15h 27m
2 stops
PDX12:26 pmPortland
May 11
PDX12:59 amPortland
11h 30m
1 stop
STL2:29 pmLambert-St Louis
Delta
Jun 7
STL5:53 pmLambert-St Louis
7h 24m
1 stop
PDX11:17 pmPortland
Jun 10
PDX11:53 amPortland
8h 02m
1 stop
STL9:55 pmLambert-St Louis
American Airlines
May 15
STL7:01 amLambert-St Louis
7h 51m
1 stop
PDX12:52 pmPortland
May 29
PDX9:55 pmPortland
9h 58m
1 stop
STL9:53 amLambert-St Louis

Find the cheapest one-way flights from St. Louis to Portland

If you're looking for one-way flights from St. Louis to Portland, view some of our deals below provided by Delta, Frontier and Spirit Airlines
Spirit Airlines
May 15
STL11:36 amLambert-St Louis
14h 31m
1 stop
PDX12:07 amPortland
Frontier
May 15
STL8:04 pmLambert-St Louis
12h 44m
1 stop
PDX6:48 amPortland
Multiple Airlines
Jun 7
STL4:45 pmLambert-St Louis
32h 08m
2 stops
PDX10:53 pmPortland

Search last-minute flights to Portland from St. Louis

Find and compare round-trip flight prices for your last-minute flight from St. Louis to Portland
Frontier
May 3
STL7:51 pmLambert-St Louis
15h 29m
1 stop
PDX9:20 amPortland
May 11
PDX10:20 amPortland
21h 58m
1 stop
STL10:18 amLambert-St Louis
Multiple Airlines
May 6
STL5:02 pmLambert-St Louis
20h 12m
1 stop
PDX11:14 amPortland
May 10
PDX10:16 pmPortland
11h 23m
1 stop
STL11:39 amLambert-St Louis
Spirit Airlines
May 6
STL5:02 pmLambert-St Louis
20h 12m
1 stop
PDX11:14 amPortland
May 10
PDX11:30 pmPortland
14h 55m
2 stops
STL4:25 pmLambert-St Louis
American Airlines
May 1
STL6:10 pmLambert-St Louis
7h 16m
1 stop
PDX11:26 pmPortland
May 8
PDX1:25 pmPortland
7h 52m
1 stop
STL11:17 pmLambert-St Louis
Frontier
May 3
STL5:35 pmLambert-St Louis
8h 24m
1 stop
PDX11:59 pmPortland
May 10
PDX12:49 amPortland
6h 58m
1 stop
STL9:47 amLambert-St Louis
Delta
May 4
STL5:30 pmLambert-St Louis
6h 51m
1 stop
PDX10:21 pmPortland
May 6
PDX7:45 pmPortland
11h 34m
2 stops
STL9:19 amLambert-St Louis

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
FrontierPriceFrom $111Free CancellationRating
6.3
4,132 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $114Free CancellationRating
6.4
8,746 reviews
Search Spirit Airlines flights
Alaska AirlinesPriceFrom $259Free CancellationRating
8.0
9,115 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $293Free CancellationRating
7.3
14,889 reviews
Search American Airlines flights
DeltaPriceFrom $296Free CancellationRating
8.0
10,966 reviews
Search Delta flights
United AirlinesPriceFrom $306Free CancellationRating
7.4
11,228 reviews
Search United Airlines flights

Frontier flights from St. Louis to Portland

Our best Frontier deals on St. Louis to Portland flight tickets
Frontier
May 9
STL10:59 pmLambert-St Louis
12h 16m
1 stop
PDX9:15 amPortland
May 11
PDX12:59 amPortland
11h 30m
1 stop
STL2:29 pmLambert-St Louis
Frontier
May 9
STL10:59 pmLambert-St Louis
15h 27m
2 stops
PDX12:26 pmPortland
May 11
PDX12:59 amPortland
11h 30m
1 stop
STL2:29 pmLambert-St Louis
Frontier
May 16
STL5:01 pmLambert-St Louis
7h 03m
1 stop
PDX10:04 pmPortland
May 22
PDX8:20 pmPortland
11h 53m
2 stops
STL10:13 amLambert-St Louis

American Airlines flights from St. Louis to Portland

Our best American Airlines deals on St. Louis to Portland flight tickets
American Airlines
May 1
STL6:10 pmLambert-St Louis
7h 16m
1 stop
PDX11:26 pmPortland
May 8
PDX1:25 pmPortland
7h 52m
1 stop
STL11:17 pmLambert-St Louis
American Airlines
May 15
STL7:01 amLambert-St Louis
7h 51m
1 stop
PDX12:52 pmPortland
May 29
PDX9:55 pmPortland
9h 58m
1 stop
STL9:53 amLambert-St Louis
American Airlines
May 26
STL5:08 pmLambert-St Louis
7h 45m
1 stop
PDX10:53 pmPortland
May 27
PDX11:54 pmPortland
9h 16m
1 stop
STL11:10 amLambert-St Louis

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 from St. Louis to Portland?

September. The cheapest time of year to fly to Portland from St. Louis is September. Most expensive is December

What is the cheapest day to depart St. Louis for Portland?

Saturday. The cheapest day of the week is typically Saturday. The most expensive is typically Sunday

When is the cheapest time to fly from St. Louis to Portland?

In the evening. St. Louis to Portland flights are approximately 34% more expensive at noon than in the evening

What is the cheapest airline that flies to Portland from St. Louis?

Spirit Airlines. Alaska Airlines, American Airlines, and Delta are the most popular carriers operating from St. Louis to Portland

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

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

How far in advance should you book St. Louis to Portland flights?

53 days before. The cheapest time to buy a flight from St. Louis to Portland is approximately 53 days to departure

How many flights depart from St. Louis to Portland on average per week?

The number of flights available between St. Louis and Portland is 1 per week as of April 2024. The most frequent departure day is Sunday, with 100% of weekly flights leaving on this day.

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

$45

Fastest flight time

6h 13m

Direct flights

None

Airports in Portland

1 airport
The best one-way flight to Portland from St. Louis in the past 72 hours is $45. The best round-trip flight deal from St. Louis to Portland found on momondo in the last 72 hours is $127.
The fastest flight from St. Louis to Portland takes 6h 13m
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 6h 13m 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.


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.


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