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Cheap flight deals from St. Louis to Portland Starting at PHP 2,078

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

  • One way
  • Round-trip
      • STL07:03 pm
        7h 34m
        1 stop
        PDX12:37 am
        Wed, Mar 12|St. Louis - Portland|Frontier Airlines
        PHP 2,078PHP 6,697
        69% OFF
        69% OFF
        PHP 6,697PHP 2,078

        Choose Frontier Airlines flights from St. Louis to Portland. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Wed, Mar 12, arriving at Portland International Airport. One-way Prices start from PHP 2,078 including taxes and charges.

      • STL07:04 pm
        7h 33m
        1 stop
        PDX12:37 am
        Wed, Feb 26|St. Louis - Portland|Frontier Airlines
        PHP 3,444PHP 6,697
        49% OFF
        49% OFF
        PHP 6,697PHP 3,444

        Choose Frontier Airlines flights from St. Louis to Portland. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Wed, Feb 26, arriving at Portland International Airport. One-way Prices start from PHP 3,444 including taxes and charges.

      • STL07:03 pm
        7h 34m
        1 stop
        PDX12:37 am
        Wed, Mar 19|St. Louis - Portland|Frontier Airlines
        PHP 3,708PHP 6,697
        45% OFF
        45% OFF
        PHP 6,697PHP 3,708

        Choose Frontier Airlines flights from St. Louis to Portland. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Wed, Mar 19, arriving at Portland International Airport. One-way Prices start from PHP 3,708 including taxes and charges.

      • STL07:04 pm
        7h 33m
        1 stop
        PDX12:37 am
        Wed, Mar 5|St. Louis - Portland|Frontier Airlines
        PHP 4,211
        PHP 4,211

        Choose Frontier Airlines flights from St. Louis to Portland. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Wed, Mar 5, arriving at Portland International Airport. One-way Prices start from PHP 4,211 including taxes and charges.

      • STL07:04 pm
        7h 33m
        1 stop
        PDX12:37 am
        Sat, Mar 1|St. Louis - Portland|Frontier Airlines
        PHP 4,283
        PHP 4,283

        Choose Frontier Airlines flights from St. Louis to Portland. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Sat, Mar 1, arriving at Portland International Airport. One-way Prices start from PHP 4,283 including taxes and charges.

      • STL07:09 pm
        7h 28m
        1 stop
        PDX12:37 am
        Fri, Feb 28|St. Louis - Portland|Frontier Airlines
        PHP 4,427
        PHP 4,427

        Choose Frontier Airlines flights from St. Louis to Portland. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Fri, Feb 28, arriving at Portland International Airport. One-way Prices start from PHP 4,427 including taxes and charges.

      • STL07:04 pm
        7h 33m
        1 stop
        PDX12:37 am
        Mon, Mar 3|St. Louis - Portland|Frontier Airlines
        PHP 4,443
        PHP 4,443

        Choose Frontier Airlines flights from St. Louis to Portland. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Mon, Mar 3, arriving at Portland International Airport. One-way Prices start from PHP 4,443 including taxes and charges.

      • STL06:58 pm
        7h 39m
        1 stop
        PDX12:37 am
        Mon, Mar 10|St. Louis - Portland|Frontier Airlines
        PHP 4,459
        PHP 4,459

        Choose Frontier Airlines flights from St. Louis to Portland. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Mon, Mar 10, arriving at Portland International Airport. One-way Prices start from PHP 4,459 including taxes and charges.

      • STL06:51 pm
        7h 46m
        1 stop
        PDX12:37 am
        Wed, Apr 2|St. Louis - Portland|Frontier Airlines
        PHP 4,618
        PHP 4,618

        Choose Frontier Airlines flights from St. Louis to Portland. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Wed, Apr 2, arriving at Portland International Airport. One-way Prices start from PHP 4,618 including taxes and charges.

      • STL06:38 pm
        16h 2m
        1 stop
        PDX08:40 am
        Sun, Mar 9|St. Louis - Portland|Frontier Airlines
        PHP 4,698
        PHP 4,698

        Choose Frontier Airlines flights from St. Louis to Portland. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Sun, Mar 9, arriving at Portland International Airport. One-way Prices start from PHP 4,698 including taxes and charges.

      • STL01:00 pm
        3h 5m
        Nonstop
        PDX02:00 pm
        Sun, Mar 2|St. Louis - Portland|Frontier Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

St. Louis to Portland Flight Time

Flight info.
Departure
Arrival
Weekly Schedule

  1. UA2625

    United Airlines

    01:42 pm

    STL

    2.3h

    03:00 pm

    DEN

    SMTWTFS
    Search

  2. UA498

    United Airlines

    07:10 pm

    DEN

    2.7h

    08:51 pm

    PDX

    SMTWTFS

  3. DL4089

    Delta Air Lines

    03:35 pm

    STL

    1.7h

    05:17 pm

    MSP

    SMTWTFS
    Search

  4. DL2151

    Delta Air Lines

    06:40 pm

    MSP

    3.5h

    08:12 pm

    PDX

    SMTWTFS

  5. UA1004

    United Airlines

    04:30 pm

    STL

    2.3h

    05:50 pm

    DEN

    SMTWTFS
    Search

  6. F92687

    Frontier Airlines

    10:50 pm

    DEN

    2.8h

    12:40 am

    PDX

    SMTWTFS

  7. DL1492

    Delta Air Lines

    05:00 pm

    STL

    3.5h

    07:29 pm

    SLC

    SMTWTFS
    Search

  8. DL1373

    Delta Air Lines

    10:45 pm

    SLC

    1.9h

    11:42 pm

    PDX

    SMTWTFS

  9. DL1597

    Delta Air Lines

    06:30 am

    STL

    1.5h

    08:02 am

    MSP

    SMTWTFS
    Search

  10. DL2167

    Delta Air Lines

    09:17 am

    MSP

    3.5h

    10:49 am

    PDX

    SMTWTFS

  11. F94567

    Frontier Airlines

    06:55 pm

    STL

    2.5h

    08:26 pm

    DEN

    S-T-TF-
    Search

  12. F92687

    Frontier Airlines

    10:50 pm

    DEN

    2.8h

    12:40 am

    PDX

    SMTWTFS

  13. AS504

    Alaska Airlines

    07:00 am

    STL

    4.3h

    09:17 am

    SEA

    SMTWT-S
    Search

  14. AS1039

    Alaska Airlines

    11:35 am

    SEA

    0.9h

    12:29 pm

    PDX

    SMTWTFS

  15. DL2363

    Delta Air Lines

    07:40 am

    STL

    3.5h

    10:13 am

    SLC

    SMTWTFS
    Search

  16. DL1209

    Delta Air Lines

    11:31 am

    SLC

    1.9h

    12:28 pm

    PDX

    SMTWTFS

  17. UA2135

    United Airlines

    08:20 am

    STL

    2.5h

    09:53 am

    DEN

    SMTWTFS
    Search

  18. UA644

    United Airlines

    11:18 am

    DEN

    2.7h

    01:00 pm

    PDX

    SMTWTFS

  19. DL952

    Delta Air Lines

    10:24 am

    STL

    1.6h

    11:59 am

    MSP

    SMTWTFS
    Search

  20. DL1661

    Delta Air Lines

    02:20 pm

    MSP

    3.6h

    03:59 pm

    PDX

    SMTWT-S
Find more flights and airlines

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

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • When are flight tickets from St. Louis (STL) to Portland (PDX) the cheapest?

    Airlines adjust prices for flights from St. Louis to Portland based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from St. Louis (STL) to Portland (PDX) cost?

    According to Trip.com's data, the lowest price is around PHP 17,722.

  • How long does it take to fly from St. Louis (STL) to Portland (PDX) and what is the distance?

    It takes around 10 hours 35 minutes to fly from St. Louis (STL) to Portland (PDX).

  • What are the most popular airlines that fly from St. Louis (STL) to Portland (PDX)?

    Airlines with flights from St. Louis (STL) to Portland (PDX): Southwest Airlines.

How to find a cheap flight from St. Louis to Portland

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from St. Louis to Portland. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Flight Info | St. Louis to Portland

Cheapest nonstop flight pricePHP 2,077
Off-season for travelMarch
Peak season for travelMay
Flight distance2,763.15 km
Average flight time10 hours 35 minutes
Popular airlineFrontier Airlines

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