What is the cheapest airline that flies from Oregon to Lambert-St Louis?

Hawaiian Airlines, Delta, and Southwest are the most popular carriers operating from Oregon to Lambert-St Louis

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

As of August 2025, 7 flights take off from Oregon and land in St. Louis each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.

What airlines fly to St. Louis?

Delta, United Airlines and Southwest are the top three most popular airlines that fly to St. Louis from Oregon according to our data. Delta is the first choice among our users, with 37% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 6 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

How many flights depart from Oregon to St. Louis on average per day?

1 flights are operational daily from Oregon to St. Louis as of August 2025. The most popular departure time for this route is 11:00AM, with 50% of flights per day taking off at noon.

How long does it take to fly to St. Louis?

Flight times from Oregon to St. Louis vary, but if you’re flying out of Portland and flying into St. Louis (one of the most popular routes), then the duration is 3h 45m on average. Another popular route from Oregon to St. Louis is flying from Eugene to St. Louis, which will take roughly 6h 10m. Keep in mind that layovers or delays could extend your travel time.

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

Prices for flights from Oregon to Lambert-St Louis Airport refresh daily.

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

As of August 2025, there are 6 operators available to choose from for flights from Oregon to Lambert-St Louis Airport.

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

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 Oregon to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The travel and health documents you'll need for your trip to Lambert-St Louis 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 Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$107 Cheap Flights from Oregon to St. Louis in 2025

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Find the cheapest flights from Oregon to St. Louis

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

9:05 pm - 8:25 amPDX-STL

9h 20m1 stop

2:50 pm - 4:55 pmSTL-PDX

4h 05mnonstop

$217Southwest

Find Deal

sáb., sep. 20 - sáb., sep. 27

1:12 pm - 9:53 pmPDX-STL

6h 41m1 stop

5:18 am - 10:52 amSTL-PDX

7h 34m1 stop

$225American Airlines

Find Deal

sáb., sep. 20 - sáb., sep. 27

1:24 pm - 11:59 pmPDX-STL

8h 35m1 stop

3:35 pm - 9:25 pmSTL-PDX

7h 50m1 stop

$226Alaska Airlines

Find Deal

vie., sep. 26 - vie., oct. 3

12:40 am - 8:51 amPDX-STL

6h 11m1 stop

8:53 am - 12:50 pmSTL-PDX

5h 57m1 stop

$227Delta

Find Deal

jue., oct. 23 - mar., oct. 28

12:40 am - 8:51 amPDX-STL

6h 11m1 stop

6:00 am - 11:01 amSTL-PDX

7h 01m1 stop

$229Delta

Find Deal

jue., oct. 23 - mié., oct. 29

6:51 am - 9:11 amPDX-STL

24h 20m1 stop

7:55 pm - 10:34 pmSTL-PDX

28h 39m1 stop

$237Frontier

Find Deal

mar., sep. 2 - mar., sep. 9

1:24 pm - 11:59 pmPDX-STL

8h 35m1 stop

6:30 pm - 12:15 amSTL-PDX

7h 45m1 stop

$248Alaska Airlines

Find Deal

vie., sep. 26 - jue., oct. 2

12:22 pm - 9:06 amBOI-STL

19h 44m1 stop

7:52 pm - 11:43 amSTL-BOI

16h 51m1 stop

$267Frontier

Find Deal

dom., oct. 5 - jue., oct. 9

2:16 pm - 9:07 amBOI-STL

17h 51m2 stops

12:38 pm - 8:03 pmSTL-BOI

8h 25m1 stop

$316

Find Deal

dom., oct. 19 - lun., oct. 20

3:06 pm - 9:40 amMFR-STL

16h 34m2 stops

10:35 am - 8:43 amSTL-MFR

24h 08m3 stops

$448

Find Deal

mié., sep. 10 - dom., sep. 14

Southwest flights from Oregon to St. Louis

Our best Southwest deals on Oregon to St. Louis flight tickets

Southwest

Sep 20

PDX9:05 pmPortland

9h 20m

1 stop

STL8:25 amLambert-St Louis

Sep 27

STL2:50 pmLambert-St Louis

4h 05m

PDX4:55 pmPortland

$217

Find similar

Southwest

Sep 5

PDX9:05 pmPortland

8h 40m

1 stop

STL7:45 amLambert-St Louis

Sep 7

STL6:00 amLambert-St Louis

5h 45m

1 stop

PDX9:45 amPortland

$228

Find similar

Southwest

Sep 9

PDX7:00 amPortland

8h 40m

2 stops

STL5:40 pmLambert-St Louis

Sep 16

STL4:35 pmLambert-St Louis

8h 10m

1 stop

PDX10:45 pmPortland

$232

Find similar

American Airlines flights from Oregon to St. Louis

Our best American Airlines deals on Oregon to St. Louis flight tickets

American Airlines

Sep 20

PDX1:12 pmPortland

6h 41m

1 stop

STL9:53 pmLambert-St Louis

Sep 27

STL5:18 amLambert-St Louis

7h 34m

1 stop

PDX10:52 amPortland

$225

Find similar

American Airlines

Sep 11

BOI1:07 pmBoise Air Term. Gowen Fld

6h 18m

1 stop

STL8:25 pmLambert-St Louis

Sep 14

STL5:18 amLambert-St Louis

8h 29m

1 stop

BOI12:47 pmBoise Air Term. Gowen Fld

$279

Find similar

American Airlines

Sep 25

BOI1:07 pmBoise Air Term. Gowen Fld

6h 18m

1 stop

STL8:25 pmLambert-St Louis

Sep 28

STL7:23 amLambert-St Louis

6h 04m

1 stop

BOI12:27 pmBoise Air Term. Gowen Fld

$306

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

sáb. 9/20

9:05 pm-8:25 am

1 stop9h 20m

Lambert-St Louis

sáb. 9/27

2:50 pm-4:55 pm

Nonstop4h 05m

$217

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

sáb. 9/20

1:12 pm-9:53 pm

1 stop6h 41m

Lambert-St Louis

sáb. 9/27

5:18 am-10:52 am

1 stop7h 34m

$225

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

vie. 9/26

1:24 pm-11:59 pm

1 stop8h 35m

Lambert-St Louis

vie. 10/3

3:35 pm-9:25 pm

1 stop7h 50m

$226

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

jue. 10/23

12:40 am-8:51 am

1 stop6h 11m

Lambert-St Louis

mar. 10/28

8:53 am-12:50 pm

1 stop5h 57m

$227

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

jue. 10/23

12:40 am-8:51 am

1 stop6h 11m

Lambert-St Louis

mié. 10/29

6:00 am-11:01 am

1 stop7h 01m

$229

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

mar. 9/2

6:51 am-9:11 am

1 stop24h 20m

Lambert-St Louis

mar. 9/9

7:55 pm-10:34 pm

1 stop28h 39m

$237

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

vie. 9/26

1:24 pm-11:59 pm

1 stop8h 35m

Lambert-St Louis

jue. 10/2

6:30 pm-12:15 am

1 stop7h 45m

$248

BoiseSt. Louis

BOI - STL

BOISTL

Boise Air Term. Gowen Fld

dom. 10/5

12:22 pm-9:06 am

1 stop19h 44m

Lambert-St Louis

jue. 10/9

7:52 pm-11:43 am

1 stop16h 51m

$267

BoiseSt. Louis

BOI - STL

BOISTL

Boise Air Term. Gowen Fld

dom. 10/19

2:16 pm-9:07 am

2 stops17h 51m

Lambert-St Louis

lun. 10/20

12:38 pm-8:03 pm

1 stop8h 25m

$316

MedfordSt. Louis

MFR - STL

MFRSTL

Medford

mié. 9/10

3:06 pm-9:40 am

2 stops16h 34m

Lambert-St Louis

dom. 9/14

10:35 am-8:43 am

3 stops24h 08m

$448

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Airlines

Other information

What is the cheapest month to fly to St. Louis?

In general, January is the cheapest month to fly from Oregon to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $280. The month of September is another great option to travel to St. Louis, with average flight prices from Oregon averaging around $312.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Friday when prices can be found for as low as $366. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $596. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Oregon in the evening is the least expensive time of day to depart. momondo users have found prices as low as $288 when looking at flights departing in the evening. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $679 per ticket.

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

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

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from Oregon when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $389 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Oregon for as low as $271 on momondo.

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

There are 1 cabin classes available to choose from on Oregon to Lambert-St Louis 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 Oregon to St. Louis flights?

You could potentially save up to 23% on your flight if you consider stops on a Oregon to St. Louis flight.

Cheap Oregon to St. Louis flight deals and tips

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

Best Price Found	$107
Fastest flight time	5h 20m
Direct flights	Mon and Sun
Airports in St. Louis	1 airport

The best one-way flight to St. Louis from Oregon in the past 72 hours is $107. The best round-trip flight deal from Oregon to St. Louis found on momondo in the last 72 hours is $217.

The fastest flight from Oregon to St. Louis takes 5h 20m

Direct flights go from Oregon to St. Louis on Monday and Sunday. The only airline offering direct flights is Southwest.

There is 1 airport near St. Louis: Lambert-St Louis (STL)

Search flight deals

When did momondo last update prices for flights from Oregon to Lambert-St Louis Airport?
Prices for flights from Oregon to Lambert-St Louis Airport refresh daily.
How many operators does momondo search for flights from Oregon to Lambert-St Louis Airport?
As of August 2025, there are 6 operators available to choose from for flights from Oregon to Lambert-St Louis Airport.
How old do you have to be to fly from Oregon to Lambert-St Louis Airport?
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 Oregon to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents you'll need for your trip to Lambert-St Louis 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 Lambert-St Louis 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 Oregon to St. Louis?
momondo data reveals that the most frequently booked plane model on the route from Oregon to St. Louis is Boeing 737 MAX 9, representing 25.00% of all bookings. The subsequent popular models are Boeing 737-900 Passenger/BBJ3 (winglets) at 14.29%, Boeing 737-700 Passenger/BBJ1 (winglets) at 12.50%, and Boeing 737-800 Passenger/BBJ2 (winglets) at 12.50%.

Best airlines flying from Oregon to St. Louis

Compare and see reviews for airlines that fly from Oregon to St. Louis with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $110	Free Cancellation	Rating 5.8 3,221 reviews	Search Frontier flights
Delta	PriceFrom $192	Free Cancellation	Rating 8.0 7,979 reviews	Search Delta flights
American Airlines	PriceFrom $226	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $226	Free Cancellation	Rating 7.4 8,920 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $235	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $251	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest flights

St. Charles

Chesterfield

Fairview Heights

Hermann

Maryland Heights

Florissant

O'Fallon

Fenton

Wentzville

Collinsville

Alton

St. Peters

Farmington

Festus

Glencoe

Eureka

Clayton

Edwardsville

Litchfield

Shrewsbury

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Oregon to St. Louis for you.

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

All flight searches from Oregon to St. Louis on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Oregon to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

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

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Cheap flights from Oregon to St. Louis from $107

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Oregon to St. Louis departing on 11/11. 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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Southwest flights from Oregon to St. Louis

Our best Southwest deals on Oregon to St. Louis flight tickets

American Airlines flights from Oregon to St. Louis

Our best American Airlines deals on Oregon to St. Louis flight tickets

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See travel insights to St. Louis from

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

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 St. Louis?

What is the cheapest day to depart on your flight to St. Louis?

What is the cheapest time of day to depart on your flight to St. Louis?

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

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

How far in advance should I book a flight to St. Louis?

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

There are 1 cabin classes available to choose from on Oregon to Lambert-St Louis 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 Oregon to St. Louis flights?

You could potentially save up to 23% on your flight if you consider stops on a Oregon to St. Louis flight.

What is the cheapest airline that flies from Oregon to Lambert-St Louis?

Hawaiian Airlines, Delta, and Southwest are the most popular carriers operating from Oregon to Lambert-St Louis

What airlines fly to St. Louis?

How many flights depart from Oregon to St. Louis on average per day?

1 flights are operational daily from Oregon to St. Louis as of August 2025. The most popular departure time for this route is 11:00AM, with 50% of flights per day taking off at noon.

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

As of August 2025, 7 flights take off from Oregon and land in St. Louis each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.

How long does it take to fly to St. Louis?

Cheap Oregon to St. Louis flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in St. Louis

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

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

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

What documentation or ID do you need to fly to Lambert-St Louis Airport?

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

Best airlines flying from Oregon to St. Louis

Compare and see reviews for airlines that fly from Oregon to St. Louis with momondo

Traveling to a place near St. Louis?

Why use momondo?

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

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

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

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

An easier way to manage your St. Louis 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Missouri