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Cheap flights from Portland to Missouri from $111

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Missouri departing on 6/1. 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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0 bags

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Find the cheapest flights from Portland to Missouri

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
12:35 pm - 7:23 pm
PDX
-
STL
28h 48m
1 stop
Frontier Logo
8:08 pm - 4:35 pm
STL
-
PDX
22h 27m
1 stop
$254Frontier
Fri, Jun 5 - Mon, Jun 8
Frontier Logo
11:15 am - 8:11 pm
PDX
-
STL
6h 56m
1 stop
Frontier Logo
9:06 pm - 10:20 am
STL
-
PDX
15h 14m
1 stop
$258Frontier
Thu, Jun 4 - Sun, Jun 7
Frontier Logo
8:42 pm - 6:51 pm
PDX
-
STL
20h 09m
1 stop
Frontier Logo
7:38 pm - 4:57 pm
STL
-
PDX
23h 19m
1 stop
$259Frontier
Mon, Jun 29 - Fri, Jul 3
Alaska Airlines Logo
10:37 am - 4:37 pm
PDX
-
STL
4h 00mnonstop
Alaska Airlines Logo
5:33 pm - 7:50 pm
STL
-
PDX
4h 17mnonstop
$297Alaska Airlines
Wed, Jun 3 - Sat, Jun 6
Southwest Logo
10:20 am - 3:35 pm
PDX
-
MCI
3h 15mnonstop
Southwest Logo
12:35 pm - 2:10 pm
MCI
-
PDX
3h 35mnonstop
$309Southwest
Sat, Jun 6 - Sun, Jun 7
United Airlines Logo
2:14 pm - 12:57 am
PDX
-
SGF
8h 43m
1 stop
United Airlines Logo
5:30 am - 9:31 am
SGF
-
PDX
6h 01m
1 stop
$313United Airlines
Tue, Sep 29 - Sat, Oct 3
Southwest Logo
1:15 pm - 6:30 pm
PDX
-
MCI
3h 15mnonstop
Southwest Logo
6:00 pm - 10:45 pm
MCI
-
PDX
6h 45m
1 stop
$319Southwest
Sat, Jul 4 - Sat, Jul 11
United Airlines Logo
11:00 am - 9:18 pm
PDX
-
MCI
8h 18m
1 stop
United Airlines Logo
7:59 pm - 12:50 am
MCI
-
PDX
6h 51m
1 stop
$324United Airlines
Sat, Jul 4 - Sat, Jul 11
American Airlines Logo
11:59 pm - 9:00 am
PDX
-
SGF
7h 01m
1 stop
American Airlines Logo
6:43 pm - 11:07 pm
SGF
-
PDX
6h 24m
1 stop
$336American Airlines
Thu, Aug 27 - Wed, Sep 2
American Airlines Logo
10:57 pm - 10:01 am
PDX
-
COU
9h 04m
1 stop
American Airlines Logo
6:37 pm - 11:56 pm
COU
-
PDX
7h 19m
1 stop
$338American Airlines
Tue, Jul 28 - Wed, Aug 5

Southwest flights from Portland to Missouri

Our best Southwest deals on Portland to Missouri flight tickets
Southwest
Sep 10
PDX6:05 amPortland
8h 15m
1 stop
STL4:20 pmLambert-St Louis
Sep 13
STL9:55 pmLambert-St Louis
4h 10m
PDX12:05 amPortland
$309
Southwest
Jul 4
PDX1:15 pmPortland
3h 15m
MCI6:30 pmKansas City
Jul 11
MCI6:00 pmKansas City
6h 45m
1 stop
PDX10:45 pmPortland
$319
Southwest
Jul 14
PDX5:50 amPortland
9h 55m
2 stops
STL5:45 pmLambert-St Louis
Jul 15
STL6:40 pmLambert-St Louis
5h 55m
1 stop
PDX10:35 pmPortland
$324

Alaska Airlines flights from Portland to Missouri

Our best Alaska Airlines deals on Portland to Missouri flight tickets
Alaska Airlines
Jun 3
PDX10:37 amPortland
4h 00m
STL4:37 pmLambert-St Louis
Jun 6
STL5:33 pmLambert-St Louis
4h 17m
PDX7:50 pmPortland
$297
Alaska Airlines
Jun 4
PDX10:37 amPortland
4h 00m
STL4:37 pmLambert-St Louis
Jun 7
STL5:33 pmLambert-St Louis
4h 17m
PDX7:50 pmPortland
$299
Alaska Airlines
Jun 3
PDX10:37 amPortland
4h 00m
STL4:37 pmLambert-St Louis
Jun 6
STL7:41 pmLambert-St Louis
6h 18m
1 stop
PDX11:59 pmPortland
$327

momondo Fare Finder

 
Customize your flight search to find flights from Portland to Missouri 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 May 17, 2026.
Use the filters below to find and compare flights from Portland to Missouri that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Fri 6/5

12:35 pm-7:23 pm

1 stop28h 48m

Lambert-St Louis

Mon 6/8

8:08 pm-4:35 pm

1 stop22h 27m

$254

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Thu 6/4

11:15 am-8:11 pm

1 stop6h 56m

Lambert-St Louis

Sun 6/7

9:06 pm-10:20 am

1 stop15h 14m

$258

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Mon 6/29

8:42 pm-6:51 pm

1 stop20h 09m

Lambert-St Louis

Fri 7/3

7:38 pm-4:57 pm

1 stop23h 19m

$259

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Wed 6/3

10:37 am-4:37 pm

Nonstop4h 00m

Lambert-St Louis

Sat 6/6

5:33 pm-7:50 pm

Nonstop4h 17m

$297
Quickest round-trip

PortlandKansas City

PDX - MCI

PDXMCI

Portland

Sat 6/6

10:20 am-3:35 pm

Nonstop3h 15m

Kansas City

Sun 6/7

12:35 pm-2:10 pm

Nonstop3h 35m

$309

PortlandSpringfield

PDX - SGF

PDXSGF

Portland

Tue 9/29

2:14 pm-12:57 am

1 stop8h 43m

Springfield-Branson

Sat 10/3

5:30 am-9:31 am

1 stop6h 01m

$313

PortlandKansas City

PDX - MCI

PDXMCI

Portland

Sat 7/4

1:15 pm-6:30 pm

Nonstop3h 15m

Kansas City

Sat 7/11

6:00 pm-10:45 pm

1 stop6h 45m

$319

PortlandKansas City

PDX - MCI

PDXMCI

Portland

Sat 7/4

11:00 am-9:18 pm

1 stop8h 18m

Kansas City

Sat 7/11

7:59 pm-12:50 am

1 stop6h 51m

$324

PortlandSpringfield

PDX - SGF

PDXSGF

Portland

Thu 8/27

11:59 pm-9:00 am

1 stop7h 01m

Springfield-Branson

Wed 9/2

6:43 pm-11:07 pm

1 stop6h 24m

$336

PortlandColumbia

PDX - COU

PDXCOU

Portland

Tue 7/28

10:57 pm-10:01 am

1 stop9h 04m

Columbia Regional

Wed 8/5

6:37 pm-11:56 pm

1 stop7h 19m

$338

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 Missouri from

How to get the cheapest flight ticket from Portland to Missouri

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 Missouri?

In general, July is the cheapest month to fly from Portland to Missouri. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $89. If you aren’t able to travel to Missouri during the month of July, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $98.

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

The cheapest day to depart from Portland to Missouri is on a Wednesday when prices can be found for as low as $249. Flights from Portland to Missouri on a Sunday will generally be more expensive and average around $532. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

According to our data, the cheapest time of day to fly to Missouri is in the morning. momondo users have found flights departing from Portland to Missouri in the morning for as low as $374. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Missouri are more costly at noon, with an average ticket price of $679. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Portland to Missouri flight route?

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

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

You are more likely to see cheaper flights to Missouri from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Missouri for around $380 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Missouri from Portland for as low as $263 on momondo.

Can stopping save me money on Portland to Missouri flights?

You could potentially save up to 4% on your flight if you consider stops on a Portland to Missouri flight.

Cheap Portland to Missouri flight deals and tips

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

Best Price Found

$144

Fastest flight time

3h 15m

Direct flights

Every day

Airports in Missouri

55 airports
The best one-way flight to Missouri from Portland in the past 72 hours is $144. The best round-trip flight deal from Portland to Missouri found on momondo in the last 72 hours is $384.
The fastest flight from Portland to Missouri takes 3h 15m
Direct flights go from Portland to Missouri every day.
There are 55 airports in Missouri. From Portland there are direct flights to Kansas City (MCI), Lambert-St Louis (STL).
Search flight deals

Frequently asked questions about flying from Portland to Missouri

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

    Prices for flights from Portland Airport to Missouri are refreshed on a daily basis.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Missouri.

  • What documentation or ID do you need to fly to Missouri?

    The necessary travel and health documents for your Missouri trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Portland to Missouri

Compare and see reviews for airlines that fly from Portland to Missouri with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $75Free CancellationRating
5.6
2,948 reviews
Search Frontier flights
DeltaPriceFrom $108Free CancellationRating
7.9
8,449 reviews
Search Delta flights
Alaska AirlinesPriceFrom $179Free CancellationRating
7.9
12,376 reviews
Search Alaska Airlines flights
Hawaiian AirlinesPriceFrom $186Free CancellationRating
7.8
2,837 reviews
Search Hawaiian Airlines flights
SouthwestPriceFrom $196Free CancellationRating
8.0
4,290 reviews
Search Southwest flights
United AirlinesPriceFrom $216Free CancellationRating
7.4
9,731 reviews
Search United Airlines flights
American AirlinesPriceFrom $228Free CancellationRating
7.1
11,654 reviews
Search American Airlines flights

Why use momondo?

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

It is quick and easy to find Portland to Missouri flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Missouri that suits you.

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

All flight searches from Portland to Missouri on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Portland and Missouri by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Portland to Missouri now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Missouri and let you know when they change.

An easier way to manage your Missouri trip

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Find better results for your trip to Missouri

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