Which airports can I use when flying from St. Louis to Portland?

Flights from St. Louis to Portland usually depart from Lambert-St Louis (STL) and arrive at Portland (PWM).

What cabin classes can I book on flights from St. Louis to Portland?

Only Economy Class is available on flights from St. Louis to Portland.

Which airports do connecting flights from St. Louis to Portland pass through?

One-stop flights from St. Louis to Portland most commonly connect through: • Chicago O'Hare Intl (ORD) - 27% of one-stop connections • Detroit Metropolitan Wayne County (DTW) - 24% of one-stop connections • Washington, D.C. Reagan-National (DCA) - 21% of one-stop connections • New York LaGuardia (LGA) - 11% of one-stop connections

Can I save money by using flexible dates for flights from St. Louis to Portland?

Yes. Flexible dates can save you up to 17% on flights from St. Louis to Portland. Saturday is the cheapest departure day at $402 round-trip on average, while Friday is the most expensive at $484, a difference of $82. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

How expensive are last-minute St. Louis to Portland flights?

Last-minute fares on this route (booked within two weeks of departure) run 23% above the $425 route average. Book 20 weeks before departure for the lowest fares.

How long is a flight from St. Louis to Portland?

A nonstop flight from St. Louis to Portland takes 00m, covering 1,092 miles.

Do I need a passport to fly from St. Louis to Portland?

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Have flight prices from St. Louis to Portland changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $319 to $1,227. That means the highest observed fare was about 4x higher than the lowest one.

How are flight prices from St. Louis to Portland looking right now?

One-way fares from St. Louis to Portland are currently lower than usual. Average one-way flight prices are about $217, which is 16% below the typical average for this route.

How much time can I save by choosing a different layover airport from St. Louis to Portland?

Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time at 4h 40m, compared with 5h 03m via Washington, D.C. Reagan-National (DCA) and 5h 21m via Philadelphia (PHL).

What is the time difference between St. Louis and Portland?

Portland is 1 hour ahead of St. Louis (Eastern Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Portland Airport (PWM)?

Portland Airport (PWM) hosts 5 major car rental companies, with daily rates averaging $84 for economy cars. Top options include: • Dollar • Budget • Movly • Alamo • Hertz

How much should I expect to pay for a St. Louis to Portland flight?

Round-trip flights from St. Louis to Portland range from $366 to $503, with an average of $425 over the past 12 months. Anything below $366 counts as a good deal.

What's the cheapest day of the week to fly from St. Louis to Portland?

Based on deals KAYAK users found in the last 12 months, Saturday is the cheapest day of the week to fly from St. Louis to Portland. It’s 6% cheaper than the average day, while Friday is the most expensive, with prices 13% higher.

What’s the cheapest month to fly from St. Louis to Portland?

•December is the cheapest month to fly from St. Louis to Portland at $294 round-trip. •January ($574) and July ($496) are the most expensive months. •The price difference between flying in the cheapest and most expensive months is 95% on average. This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from St. Louis to Portland the cheapest?

Flights from St. Louis to Portland are cheapest 20 weeks before departure. Booking in this window typically costs about 32% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Which airline is the cheapest to fly from St. Louis to Portland?

Delta ($339) and United Airlines ($344) are the cheapest airlines to fly round-trip from St. Louis to Portland according to KAYAK data over the last 5 days.

What’s the most popular layover airport when flying from St. Louis to Portland?

Chicago O'Hare Intl (ORD) is the most popular layover for the St. Louis to Portland route. 27% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via ORD.

What is the cheapest layover airport when flying from St. Louis to Portland?

Flights via Detroit Metropolitan Wayne County (DTW) offer the most affordable fares, with an average round-trip price of $395. Based on KAYAK data over the past 3 months.

When flying from St. Louis to Portland which airport offers the shortest layover?

Detroit Metropolitan Wayne County (DTW) had the shortest average connection time for St. Louis to Portland layovers at 2h 45m over the past 3 months.

$182 CHEAP FLIGHTS from St. Louis to Portland (STL - PWM)

Save 26% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$319

Typical prices: $366-$503

Multiple Airlines

Fri 12/7Fri 12/14

STL - PWM • 2 stops

Cheapest one-way

$182

Typical prices: $205-$404

American Airlines

Wed 12/5

STL - PWM • 1 stop

Nonstop flights

Not available

There are currently no direct flights between St. Louis and Portland. You'll need to take a connecting flight to reach the destination.

Insights

When to book

20 weeks

in advance

Our data shows that travelers who book at least 20 weeks in advance save around 32% compared to booking last minute.

Insights

When to travel

December

Cheapest • 31% price drop

August

Most popular

Good to know

Top layover airports

Detroit Metropolitan Wayne County (DTW)

Cheapest • Avg $395 (round-trip)

Washington, D.C. Reagan-National (DCA)

Shortest trip • 5h 03m (one-way)

Insights

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Portland!

Flight Deals

Cheap Flights from St. Louis to Portland (STL-PWM)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from St. Louis to Portland

Mon, Dec 7 - Mon, Dec 14

12:02 pm - 9:08 amSTL Lambert-St Louis-PWM Portland

44h 06m2 stops Atlanta Hartsfield-Jackson Orlando

9:48 am - 12:12 amPWM Portland-STL Lambert-St Louis

15h 24m1 stop Orlando

$319Multiple Airlines

Sat, Dec 12 - Mon, Dec 14

2:33 pm - 11:33 pmSTL Lambert-St Louis-PWM Portland

8h 00m1 stop Atlanta Hartsfield-Jackson

4:53 pm - 8:32 pmPWM Portland-STL Lambert-St Louis

4h 39m1 stop Detroit Metropolitan Wayne County

$339Delta

Thu, Dec 3 - Thu, Dec 10

5:00 pm - 11:20 pmSTL Lambert-St Louis-PWM Portland

5h 20m1 stop New York LaGuardia

6:00 am - 11:29 amPWM Portland-STL Lambert-St Louis

6h 29m1 stop Atlanta Hartsfield-Jackson

$339Delta

Tue, Dec 8 - Wed, Dec 16

6:20 pm - 9:08 amSTL Lambert-St Louis-PWM Portland

13h 48m1 stop Orlando

9:48 am - 12:12 amPWM Portland-STL Lambert-St Louis

15h 24m1 stop Orlando

$343Multiple Airlines

Mon, Dec 14 - Wed, Dec 16

1:18 pm - 11:24 pmSTL Lambert-St Louis-PWM Portland

9h 06m2 stops Chicago O'Hare Intl Newark

4:47 pm - 9:23 pmPWM Portland-STL Lambert-St Louis

5h 36m1 stop Chicago O'Hare Intl

$344United Airlines

Sat, Dec 5 - Tue, Dec 15

3:25 pm - 9:29 pmSTL Lambert-St Louis-PWM Portland

5h 04m1 stop Chicago O'Hare Intl

6:00 am - 2:41 pmPWM Portland-STL Lambert-St Louis

9h 41m2 stops Newark Chicago O'Hare Intl

$344United Airlines

Sat, Dec 5 - Tue, Dec 15

6:02 am - 12:02 pmSTL Lambert-St Louis-PWM Portland

5h 00m1 stop Chicago O'Hare Intl

6:00 am - 12:25 pmPWM Portland-STL Lambert-St Louis

7h 25m1 stop Philadelphia

$363American Airlines

Sat, Dec 5 - Tue, Dec 15

6:02 am - 12:02 pmSTL Lambert-St Louis-PWM Portland

5h 00m1 stop Chicago O'Hare Intl

12:15 pm - 7:58 pmPWM Portland-STL Lambert-St Louis

8h 43m1 stop Chicago O'Hare Intl

$363American Airlines

Sat, Dec 5 - Tue, Dec 15

4:15 pm - 9:50 pmSTL Lambert-St Louis-PWM Portland

4h 35m1 stop Baltimore/Washington

12:45 pm - 7:25 pmPWM Portland-STL Lambert-St Louis

7h 40m2 stops Baltimore/Washington Pittsburgh

$368Southwest

Wed, Dec 2 - Thu, Dec 10

6:35 am - 2:45 pmSTL Lambert-St Louis-PWM Portland

7h 10m1 stop Baltimore/Washington

12:45 pm - 6:05 pmPWM Portland-STL Lambert-St Louis

6h 20m1 stop Baltimore/Washington

$378Southwest

Booking Insights

Price, demand and travel trends for St. Louis to Portland flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

Layovers

What's the cheapest day of the week to fly from St. Louis to Portland?: Based on deals KAYAK users found in the last 12 months, Saturday is the cheapest day of the week to fly from St. Louis to Portland. It’s 6% cheaper than the average day, while Friday is the most expensive, with prices 13% higher.
What’s the cheapest month to fly from St. Louis to Portland? KAYAK internal proprietary data takes all prices for each month over the last 12 months for round-trip flights from St. Louis to Portland, removes the top 0.1% to account for outliers and then takes the median of all values for each month.: •December is the cheapest month to fly from St. Louis to Portland at $294 round-trip.
•January ($574) and July ($496) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 95% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.
When are flights from St. Louis to Portland the cheapest?: Flights from St. Louis to Portland are cheapest 20 weeks before departure. Booking in this window typically costs about 32% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Low season	February
High season	August
Cheapest flight	$182

Beat the crowds with an average 59% drop in travelers.

The most popular month to fly with an average 69% increase in travelers.

One-way flight from St. Louis to Portland

When to book flights from St. Louis to Portland

Are your dates flexible? Find out the best times to travel from St. Louis to Portland based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What cabin classes can I book on flights from St. Louis to Portland?
Only Economy Class is available on flights from St. Louis to Portland.
How long is a flight from St. Louis to Portland?
A nonstop flight from St. Louis to Portland takes 00m, covering 1,092 miles.
Do I need a passport to fly from St. Louis to Portland?
No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.
How much should I expect to pay for a St. Louis to Portland flight?
Round-trip flights from St. Louis to Portland range from $366 to $503, with an average of $425 over the past 12 months. Anything below $366 counts as a good deal.
How expensive are last-minute St. Louis to Portland flights?
Last-minute fares on this route (booked within two weeks of departure) run 23% above the $425 route average. Book 20 weeks before departure for the lowest fares.
Have flight prices from St. Louis to Portland changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $319 to $1,227. That means the highest observed fare was about 4x higher than the lowest one.
How are flight prices from St. Louis to Portland looking right now?
One-way fares from St. Louis to Portland are currently lower than usual. Average one-way flight prices are about $217, which is 16% below the typical average for this route.
What car rental options are available at Portland Airport (PWM)?
Portland Airport (PWM) hosts 5 major car rental companies, with daily rates averaging $84 for economy cars. Top options include:

• Dollar
• Budget
• Movly
• Alamo
• Hertz
Which airports can I use when flying from St. Louis to Portland?
Flights from St. Louis to Portland usually depart from Lambert-St Louis (STL) and arrive at Portland (PWM).
Which airports do connecting flights from St. Louis to Portland pass through?
One-stop flights from St. Louis to Portland most commonly connect through:

• Chicago O'Hare Intl (ORD) - 27% of one-stop connections
• Detroit Metropolitan Wayne County (DTW) - 24% of one-stop connections
• Washington, D.C. Reagan-National (DCA) - 21% of one-stop connections
• New York LaGuardia (LGA) - 11% of one-stop connections
Can I save money by using flexible dates for flights from St. Louis to Portland?
Yes. Flexible dates can save you up to 17% on flights from St. Louis to Portland. Saturday is the cheapest departure day at $402 round-trip on average, while Friday is the most expensive at $484, a difference of $82.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.
How much time can I save by choosing a different layover airport from St. Louis to Portland?
Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time at 4h 40m, compared with 5h 03m via Washington, D.C. Reagan-National (DCA) and 5h 21m via Philadelphia (PHL).
What is the time difference between St. Louis and Portland?
Portland is 1 hour ahead of St. Louis (Eastern Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

If your dates are flexible, aim for a Saturday departure and avoid flying on Friday. On this route, Saturday flights average $402, about $82 less than Friday fares (17% savings) based on the last 12 months.
For the best chance at a low fare, aim to book around 20 weeks before you fly. On this route, that window historically saves about 32% versus last-minute pricing (KAYAK booking data, last 12 months).
If you can choose when to travel, plan your St. Louis to Portland trip for December. Fares historically average $294 round-trip in that month - typically $280 less than the most expensive month, which is January (based on the last 12 months).
If you're arriving late at night and need somewhere to stay, check out these hotels close to Portland Airport.

• Clarion Hotel Portland Airport Me
• La Quinta Inn & Suites by Wyndham Portland DT/Maine Med
• DoubleTree by Hilton Portland

More options for your flight from St. Louis to Portland

Add a hotel or car rental

Airports

Cabin class

Direct Flights

Origins

Other destinations

Return flight

Complete your trip to Portland with a hotel stay or car rental

Car rentals in Portland

Hotels in Portland

Vacations in Portland

STL - PWM

$182 Find Cheap Flights from St. Louis to Portland - Compare and Save

Everything you should know

Cheap Flights from St. Louis to Portland (STL-PWM)

Recent round-trip flight deals from St. Louis to Portland

Recent one-way flight deals from St. Louis to Portland

Recent last minute flight deals from St. Louis to Portland

Price, demand and travel trends for St. Louis to Portland flights

What's the cheapest day of the week to fly from St. Louis to Portland?

What’s the cheapest month to fly from St. Louis to Portland?

When are flights from St. Louis to Portland the cheapest?

Which airline is the cheapest to fly from St. Louis to Portland?

What’s the most popular layover airport when flying from St. Louis to Portland?

What is the cheapest layover airport when flying from St. Louis to Portland?

When flying from St. Louis to Portland which airport offers the shortest layover?

Key details for St. Louis to Portland flights

Low season

High season

Cheapest flight

When to book flights from St. Louis to Portland

Your St. Louis to Portland flight questions, answered

Your guide to booking St. Louis to Portland flights

More options for your flight from St. Louis to Portland

Complete your trip to Portland with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from St. Louis to Portland

Find direct flights to and from St. Louis and Portland

Flights from domestic origins to Portland

Flights to other popular destinations

Find deals for your return flight