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Flights from Portland to St. Louis
Cheap flight deals from Portland to St. Louis
We've found these cheap flights for you. You can book one-way or round-trip flight tickets.
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Round-trip
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One way
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PDX 05:306h 4m1 stopsSTL 13:34Portland - St. Louis | Tue, Jun 3 | Delta Air LinesSTL 08:499h 5m1 stopsPDX 15:54St. Louis - Portland | Mon, Jun 9 | Delta Air LinesRp 3,384,733 Rp 5,167,24634% OFF34% OFFRp 5,167,246 Rp 3,384,733
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PDX 00:527h 40m1 stopsSTL 10:32Portland - St. Louis | Fri, Jul 4 | Delta Air LinesSTL 19:156h 20m1 stopsPDX 23:35St. Louis - Portland | Tue, Jul 8 | Delta Air LinesRp 3,564,192 Rp 5,167,24631% OFF31% OFFRp 5,167,246 Rp 3,564,192
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PDX 00:527h 41m1 stopsSTL 10:33Portland - St. Louis | Tue, Jul 1 | Delta Air LinesSTL 19:156h 20m1 stopsPDX 23:35St. Louis - Portland | Tue, Jul 8 | Delta Air LinesRp 3,566,464 Rp 5,167,24631% OFF31% OFFRp 5,167,246 Rp 3,566,464
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PDX 00:527h 40m1 stopsSTL 10:32Portland - St. Louis | Thu, Jul 3 | Delta Air LinesSTL 19:156h 20m1 stopsPDX 23:35St. Louis - Portland | Tue, Jul 8 | Delta Air LinesRp 3,575,55031% OFFRp 5,167,246 Rp 3,575,550
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PDX 17:005h 33m1 stopsSTL 00:33Portland - St. Louis | Tue, May 27 | Delta Air LinesSTL 19:196h 24m1 stopsPDX 23:43St. Louis - Portland | Tue, Jun 3 | Delta Air LinesRp 3,602,81030% OFFRp 5,167,246 Rp 3,602,810
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PDX 23:138h 24m1 stopsSTL 09:37Portland - St. Louis | Mon, Jun 9 | Delta Air LinesSTL 19:156h 23m1 stopsPDX 23:38St. Louis - Portland | Mon, Jun 16 | Delta Air LinesRp 3,605,08230% OFFRp 5,167,246 Rp 3,605,082
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PDX 06:208h 22m1 stopsSTL 16:42Portland - St. Louis | Wed, Jul 9 | Delta Air LinesSTL 17:377h 49m1 stopsPDX 23:26St. Louis - Portland | Mon, Jul 14 | Delta Air LinesRp 3,727,75028% OFFRp 5,167,246 Rp 3,727,750
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PDX 00:528h 1m1 stopsSTL 10:53Portland - St. Louis | Wed, Jun 11 | Delta Air LinesSTL 17:387h 54m1 stopsPDX 23:32St. Louis - Portland | Wed, Jun 18 | Delta Air LinesRp 3,970,81523% OFFRp 5,167,246 Rp 3,970,815
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PDX 17:065h 37m1 stopsSTL 00:43Portland - St. Louis | Wed, Jun 18 | Delta Air LinesSTL 19:156h 24m1 stopsPDX 23:39St. Louis - Portland | Fri, Jun 20 | Delta Air LinesRp 4,002,61723% OFFRp 5,167,246 Rp 4,002,617
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PDX 17:005h 59m1 stopsSTL 00:59Portland - St. Louis | Sun, Jun 1 | Delta Air LinesSTL 18:147h 11m1 stopsPDX 23:25St. Louis - Portland | Sat, Jun 7 | Delta Air LinesRp 4,082,12521% OFFRp 5,167,246 Rp 4,082,125
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PDX 13:0017h 25m1 stopsSTL Invalid DatePortland - St. Louis | Thu, May 22 | Normal AirlineSTL 15:006hNonstopPDX 16:00St. Louis - Portland | Sat, May 24 | Normal AirlineFind More FlightsFind More Flights
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PDX 06:3525h 34m1 stopsSTL 10:09Portland - St. Louis | Tue, May 27 | Frontier AirlinesRp 1,342,535 Rp 2,271,63341% OFF41% OFFRp 2,271,633 Rp 1,342,535
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PDX 00:465h 48m1 stopsSTL 08:34Portland - St. Louis | Sat, Jul 12 | Delta Air LinesRp 1,358,437 Rp 2,271,63340% OFF40% OFFRp 2,271,633 Rp 1,358,437
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PDX 00:467h 52m1 stopsSTL 10:38Portland - St. Louis | Fri, Jul 11 | Delta Air LinesRp 1,633,304 Rp 2,271,63328% OFF28% OFFRp 2,271,633 Rp 1,633,304
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PDX 13:5021h 50m1 stopsSTL 13:40Portland - St. Louis | Thu, May 22 | Frontier AirlinesRp 1,765,05922% OFFRp 2,271,633 Rp 1,765,059
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PDX 00:527h 45m1 stopsSTL 10:37Portland - St. Louis | Wed, Jun 25 | Delta Air LinesRp 1,778,68922% OFFRp 2,271,633 Rp 1,778,689
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PDX 13:407h 40m1 stopsSTL 23:20Portland - St. Louis | Wed, Jul 16 | Delta Air LinesRp 1,778,68922% OFFRp 2,271,633 Rp 1,778,689
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PDX 23:118h 24m1 stopsSTL 09:35Portland - St. Louis | Tue, Jun 3 | Delta Air LinesRp 1,783,23221% OFFRp 2,271,633 Rp 1,783,232
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PDX 23:118h 24m1 stopsSTL 09:35Portland - St. Louis | Thu, Jun 5 | Delta Air LinesRp 1,785,50421% OFFRp 2,271,633 Rp 1,785,504
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PDX 00:527h 40m1 stopsSTL 10:32Portland - St. Louis | Sun, Jun 29 | Delta Air LinesRp 1,794,59021% OFFRp 2,271,633 Rp 1,794,590
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PDX 00:527h 41m1 stopsSTL 10:33Portland - St. Louis | Tue, Jul 1 | Delta Air LinesRp 1,794,59021% OFFRp 2,271,633 Rp 1,794,590
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PDX 13:0017h 25m1 stopsSTL Invalid DatePortland - St. Louis | Thu, May 22 | Normal AirlineFind More FlightsFind More Flights
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
Flight Info | Portland to St. Louis
Cheapest one-way flight price | Rp 1,342,534 |
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Cheapest round-trip ticket price | Rp 7,178,359 |
Off-season for travel | April |
Peak season for travel | February |
Flight distance | 2,763.15 km |
Popular airline | Alaska Airlines |
When is the cheapest time to fly from Portland to St. Louis?
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Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Frequently Asked Questions
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When are flight tickets from Portland (PDX) to St. Louis (STL) the cheapest?
Airlines adjust prices for flights from Portland to St. Louis 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 Portland (PDX) to St. Louis (STL) cost?
According to Trip.com's data, the lowest price is around Rp 7,337,373.
How to find a cheap flight from Portland to St. Louis
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 Portland to St. Louis. Book your flights at the right time and save more.
Be flexible with your travel dates to get the cheapest Portland to St. Louis ticket.
Tap "Date" in the flight search bar to browse the calendar and find airfare from Portland to St. Louis for the next six months in 2025. If you're looking to fly within the next three months, the lowest fare is Rp 1342535 for a one-way ticket on Tue, May 27.
Compare cheap Portland to St. Louis flight deals from hundreds of airlines.
Our powerful search system compares prices from over 500 airlines. So you can find the cheapest flights from Portland to St. Louis. The most affordable airline currently operating on this route is Frontier Airlines.
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Book early or wait unitl the last minute to fine the best fares.
It's always better to book early! Airlines typically release their lowest fares about a year before departure, so check as soon as flights become available. If you miss that window, you may still find great deals closer to your travel date.
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