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Cheap flights from Missouri to Portland from $97

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to Portland departing on 10/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Missouri to Portland

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:10 pm - 4:35 pmSTL  Lambert-St Louis-PDX Portland
22h 25m1 stop Denver Intl
Frontier Logo
9:34 pm - 1:17 amPDX  Portland-STL Lambert-St Louis
25h 43m1 stop Las Vegas Harry Reid Intl
$215Frontier
Fri, Oct 16 - Sun, Oct 18
American Airlines Logo
10:14 am - 4:54 pmSTL  Lambert-St Louis-PDX Portland
8h 40m1 stop Dallas/Fort Worth
American Airlines Logo
11:08 pm - 10:18 amPDX  Portland-STL Lambert-St Louis
9h 10m1 stop Chicago O'Hare Intl
$228American Airlines
Sat, Sep 26 - Sat, Oct 3
Southwest Logo
2:20 pm - 8:45 pmSTL  Lambert-St Louis-PDX Portland
8h 25m1 stop Chicago Midway
Southwest Logo
10:45 pm - 10:05 amPDX  Portland-STL Lambert-St Louis
9h 20m1 stop Baltimore/Washington
$229Southwest
Mon, Aug 31 - Mon, Aug 31
Southwest Logo
5:10 am - 9:35 amSTL  Lambert-St Louis-PDX Portland
6h 25m1 stop Dallas Love Field
Southwest Logo
11:35 pm - 9:15 amPDX  Portland-STL Lambert-St Louis
7h 40m1 stop Chicago Midway
$229Southwest
Mon, Oct 19 - Mon, Oct 26
Delta Logo
6:15 am - 12:37 pmSTL  Lambert-St Louis-PDX Portland
8h 22m1 stop Minneapolis St Paul
Delta Logo
12:25 am - 10:34 amPDX  Portland-STL Lambert-St Louis
8h 09m1 stop Minneapolis St Paul
$229Delta
Sat, Sep 12 - Fri, Sep 18
Delta Logo
5:00 pm - 10:38 pmSTL  Lambert-St Louis-PDX Portland
7h 38m1 stop Salt Lake City
Delta Logo
5:10 pm - 12:44 amPDX  Portland-STL Lambert-St Louis
5h 34m1 stop Salt Lake City
$229Delta
Sat, Sep 5 - Tue, Sep 15
American Airlines Logo
5:00 am - 12:22 pmSTL  Lambert-St Louis-PDX Portland
9h 22m1 stop Chicago O'Hare Intl
American Airlines Logo
11:49 pm - 9:20 amPDX  Portland-STL Lambert-St Louis
7h 31m1 stop Dallas/Fort Worth
$229American Airlines
Sat, Oct 10 - Sat, Oct 17
Frontier Logo
8:10 pm - 4:35 pmSTL  Lambert-St Louis-PDX Portland
22h 25m1 stop Denver Intl
Frontier Logo
9:03 pm - 10:39 pmPDX  Portland-STL Lambert-St Louis
23h 36m1 stop Las Vegas Harry Reid Intl
$240Frontier
Thu, Oct 29 - Sun, Nov 1
United Airlines Logo
5:10 am - 12:00 pmSTL  Lambert-St Louis-PDX Portland
8h 50m2 stops Denver Intl San Francisco
United Airlines Logo
8:40 am - 4:34 pmPDX  Portland-STL Lambert-St Louis
5h 54m1 stop Denver Intl
$294United Airlines
Sun, Sep 6 - Sat, Sep 12
United Airlines Logo
11:32 am - 3:05 pmMCI  Kansas City-PDX Portland
5h 33m1 stop Denver Intl
United Airlines Logo
5:00 am - 4:07 pmPDX  Portland-MCI Kansas City
9h 07m2 stops Denver Intl Chicago O'Hare Intl
$316United Airlines
Wed, Sep 2 - Sun, Sep 6

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Frontier flights from Missouri to Portland

Our best Frontier deals on Missouri to Portland flight tickets
Frontier
Oct 16
STL8:10 pmLambert-St Louis
22h 25m
1 stop
PDX4:35 pmPortland
Oct 18
PDX9:34 pmPortland
25h 43m
1 stop
STL1:17 amLambert-St Louis
$215
Frontier
Sep 9
STL12:17 pmLambert-St Louis
25h 19m
1 stop
PDX11:36 amPortland
Sep 11
PDX12:38 pmPortland
28h 39m
1 stop
STL7:17 pmLambert-St Louis
$240
Frontier
Oct 21
STL8:10 pmLambert-St Louis
22h 25m
1 stop
PDX4:35 pmPortland
Oct 24
PDX12:34 pmPortland
19h 06m
2 stops
STL9:40 amLambert-St Louis
$250

Delta flights from Missouri to Portland

Our best Delta deals on Missouri to Portland flight tickets
Delta
Sep 1
STL5:00 pmLambert-St Louis
7h 38m
1 stop
PDX10:38 pmPortland
Sep 5
PDX11:55 amPortland
8h 08m
1 stop
STL10:03 pmLambert-St Louis
$229
Delta
Aug 31
STL11:13 amLambert-St Louis
8h 21m
1 stop
PDX5:34 pmPortland
Sep 1
PDX2:08 pmPortland
7h 13m
1 stop
STL11:21 pmLambert-St Louis
$246
Delta
Sep 18
STL6:55 pmLambert-St Louis
6h 45m
1 stop
PDX11:40 pmPortland
Sep 22
PDX12:25 amPortland
6h 15m
1 stop
STL8:40 amLambert-St Louis
$259

momondo Fare Finder

 
Customize your flight search to find flights from Missouri to Portland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 12, 2026.
Use the filters below to find and compare flights from Missouri to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisPortland

STL Lambert-St Louis - PDX Portland

STLPDX

Lambert-St Louis

Fri 10/16

8:10 pm-4:35 pm

1 stop22h 25m

Portland

Sun 10/18

9:34 pm-1:17 am

1 stop25h 43m

$215

St. LouisPortland

STL Lambert-St Louis - PDX Portland

STLPDX

Lambert-St Louis

Sat 9/26

10:14 am-4:54 pm

1 stop8h 40m

Portland

Sat 10/3

11:08 pm-10:18 am

1 stop9h 10m

$228

St. LouisPortland

STL Lambert-St Louis - PDX Portland

STLPDX

Lambert-St Louis

Mon 8/31

2:20 pm-8:45 pm

1 stop8h 25m

Portland

Mon 8/31

10:45 pm-10:05 am

1 stop9h 20m

$229

St. LouisPortland

STL Lambert-St Louis - PDX Portland

STLPDX

Lambert-St Louis

Mon 10/19

5:10 am-9:35 am

1 stop6h 25m

Portland

Mon 10/26

11:35 pm-9:15 am

1 stop7h 40m

$229

St. LouisPortland

STL Lambert-St Louis - PDX Portland

STLPDX

Lambert-St Louis

Sat 9/12

6:15 am-12:37 pm

1 stop8h 22m

Portland

Fri 9/18

12:25 am-10:34 am

1 stop8h 09m

$229
Quickest round-trip

St. LouisPortland

STL Lambert-St Louis - PDX Portland

STLPDX

Lambert-St Louis

Sat 9/5

5:00 pm-10:38 pm

1 stop7h 38m

Portland

Tue 9/15

5:10 pm-12:44 am

1 stop5h 34m

$229

St. LouisPortland

STL Lambert-St Louis - PDX Portland

STLPDX

Lambert-St Louis

Sat 10/10

5:00 am-12:22 pm

1 stop9h 22m

Portland

Sat 10/17

11:49 pm-9:20 am

1 stop7h 31m

$229

St. LouisPortland

STL Lambert-St Louis - PDX Portland

STLPDX

Lambert-St Louis

Thu 10/29

8:10 pm-4:35 pm

1 stop22h 25m

Portland

Sun 11/1

9:03 pm-10:39 pm

1 stop23h 36m

$240

St. LouisPortland

STL Lambert-St Louis - PDX Portland

STLPDX

Lambert-St Louis

Sun 9/6

5:10 am-12:00 pm

2 stops8h 50m

Portland

Sat 9/12

8:40 am-4:34 pm

1 stop5h 54m

$294

Kansas CityPortland

MCI Kansas City - PDX Portland

MCIPDX

Kansas City

Wed 9/2

11:32 am-3:05 pm

1 stop5h 33m

Portland

Sun 9/6

5:00 am-4:07 pm

2 stops9h 07m

$316

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portland from

How to get the cheapest flight ticket from Missouri 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 Missouri is in February. Flight prices, which tend to average around $230, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in February, then you should wait until January to fly from Missouri, when ticket prices are also cheap, with an average price of $279.

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 $377. 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 Sunday, with ticket prices averaging around $484.

What is the cheapest Missouri to Portland flight route?

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

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

You are more likely to see cheaper flights to Portland from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland for around $366 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland from Missouri for as low as $283 on momondo.

What cabin class options are available on Missouri to Portland flights?

There are 4 cabin classes available to choose from on Missouri to Portland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Missouri to Portland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missouri to Portland

Best Price Found

$178

Fastest flight time

3h 35m

Direct flights

Every day

Airports in Portland

1 airport
The best one-way flight to Portland from Missouri in the past 72 hours is $178. The best round-trip flight deal from Missouri to Portland found on momondo in the last 72 hours is $297.
The fastest flight from Missouri to Portland takes 3h 35m
Direct flights go from Missouri to Portland every day.
There is 1 airport in Portland. From Missouri there are direct flights to Portland (PDX).
Search flight deals

Frequently asked questions about flying from Missouri to Portland

  • When did momondo last update prices for flights from Missouri to Portland Airport?

    Prices for flights from Missouri to Portland Airport were last updated today.

  • How many operators does momondo search for flights from Missouri to Portland Airport?

  • How old do you have to be to fly from Missouri to Portland Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missouri to Portland Airport.

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

    The travel and health documents required for your trip to Portland Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portland Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Missouri to Portland?

Best airlines flying from Missouri to Portland

Compare and see reviews for airlines that fly from Missouri to Portland with momondo
Airline
Rating
Free Cancellation
Price
Hawaiian AirlinesPriceFrom $98Free CancellationRating
7.8
2,817 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $148Free CancellationRating
7.8
8,505 reviews
Search Delta flights
FrontierPriceFrom $167Free CancellationRating
5.6
2,699 reviews
Search Frontier flights
Alaska AirlinesPriceFrom $176Free CancellationRating
7.9
12,800 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $186Free CancellationRating
7.1
11,915 reviews
Search American Airlines flights
SouthwestPriceFrom $196Free CancellationRating
8.0
4,218 reviews
Search Southwest flights
United AirlinesPriceFrom $226Free CancellationRating
7.4
10,115 reviews
Search United Airlines flights

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Lincoln City
Seaside
Vancouver
Cannon Beach
Salem
Astoria
Long Beach
Beaverton
Rockaway Beach
Hillsboro
Tigard
Depoe Bay
Longview
Hood River
Newberg
Clackamas
Troutdale
Gresham
Kelso
Wilsonville

Why use momondo?

Why should I use momondo to find a flight deal from Missouri to Portland?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Missouri to Portland. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Missouri to Portland with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Portland from Missouri with this policy.

How can momondo help me find flights from Missouri to Portland?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Missouri to Portland.

I’m not ready to book a flight from Missouri 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 Missouri and alert you when they change.

An easier way to manage your Portland trip

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