Cheap Flights from Portland to St. Louis
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Flights from Portland to St. Louis
Flight deals from Portland to St. Louis
We've found these cheap flights for you. You can book one-way or return flight tickets.
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One way
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PDX 06:2025h 39m1 stopsSTL 09:59Portland - St. Louis | Tue, May 6 | Frontier Airlines
STL 20:156h 23m1 stopsPDX 00:38St. Louis - Portland | Sat, May 10 | Frontier AirlinesNZD 327 NZD 45628% OFF28% OFFNZD 456 NZD 327 -
PDX 18:4124h 24m1 stopsSTL 21:05Portland - St. Louis | Thu, Apr 24 | Frontier Airlines
STL 18:587h 44m1 stopsPDX 00:42St. Louis - Portland | Sat, Apr 26 | Frontier AirlinesNZD 335 NZD 45627% OFF27% OFFNZD 456 NZD 335
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PDX 06:2025h 39m1 stopsSTL 09:59Portland - St. Louis | Fri, May 9 | Frontier Airlines
STL 20:156h 23m1 stopsPDX 00:38St. Louis - Portland | Sat, May 10 | Frontier AirlinesNZD 336 NZD 45626% OFF26% OFFNZD 456 NZD 336
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PDX 22:598h 29m1 stopsSTL 09:28Portland - St. Louis | Sat, May 3 | Delta Air Lines
STL 19:196h 23m1 stopsPDX 23:42St. Louis - Portland | Wed, May 7 | Delta Air LinesNZD 35921% OFFNZD 456 NZD 359 -
PDX 23:108h 25m1 stopsSTL 09:35Portland - St. Louis | Sat, May 10 | Delta Air Lines
STL 19:196h 23m1 stopsPDX 23:42St. Louis - Portland | Wed, May 14 | Delta Air LinesNZD 36021% OFFNZD 456 NZD 360
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PDX 13:158h 44m1 stopsSTL 23:59Portland - St. Louis | Sat, Apr 26 | Alaska Airlines
STL 18:537h 45m1 stopsPDX 00:38St. Louis - Portland | Sat, May 3 | Frontier AirlinesNZD 36021% OFFNZD 456 NZD 360 -
PDX 06:2025h 41m1 stopsSTL 10:01Portland - St. Louis | Sun, Apr 27 | Frontier Airlines
STL 18:537h 45m1 stopsPDX 00:38St. Louis - Portland | Mon, May 5 | Frontier AirlinesNZD 36121% OFFNZD 456 NZD 361
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PDX 06:206h 47m1 stopsSTL 15:07Portland - St. Louis | Thu, May 1 | Frontier Airlines
STL 21:5519h 47m1 stopsPDX 15:42St. Louis - Portland | Sun, May 4 | Frontier AirlinesNZD 36221% OFFNZD 456 NZD 362
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PDX 06:158h 54m1 stopsSTL 17:09Portland - St. Louis | Wed, May 7 | Delta Air Lines
STL 19:196h 23m1 stopsPDX 23:42St. Louis - Portland | Wed, May 14 | Delta Air LinesNZD 36320% OFFNZD 456 NZD 363
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PDX 14:007h 34m1 stopsSTL 23:34Portland - St. Louis | Fri, Apr 25 | Delta Air Lines
STL 19:156h 29m1 stopsPDX 23:44St. Louis - Portland | Mon, Apr 28 | Delta Air LinesNZD 36919% OFFNZD 456 NZD 369
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PDX 13:0017h 25m1 stopsSTL Invalid DatePortland - St. Louis | Sat, Apr 26 | Normal Airline
STL 15:006hDirectPDX 16:00St. Louis - Portland | Mon, Apr 28 | Normal AirlineFind More FlightsFind More Flights
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PDX 06:2025h 41m1 stopsSTL 10:01Portland - St. Louis | Thu, Apr 24 | Frontier AirlinesNZD 158 NZD 22530% OFF30% OFFNZD 225 NZD 158
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PDX 06:2025h 39m1 stopsSTL 09:59Portland - St. Louis | Tue, May 6 | Frontier AirlinesNZD 162 NZD 22528% OFF28% OFFNZD 225 NZD 162
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PDX 14:307h 34m1 stopsSTL 00:04Portland - St. Louis | Tue, May 27 | Alaska AirlinesNZD 174 NZD 22523% OFF23% OFFNZD 225 NZD 174
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PDX 06:158h 54m1 stopsSTL 17:09Portland - St. Louis | Wed, Jun 4 | Delta Air LinesNZD 17721% OFFNZD 225 NZD 177
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PDX 23:118h 18m1 stopsSTL 09:29Portland - St. Louis | Sat, Jun 7 | Delta Air LinesNZD 17721% OFFNZD 225 NZD 177
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PDX 13:5021h 50m1 stopsSTL 13:40Portland - St. Louis | Thu, May 22 | Frontier AirlinesNZD 17921% OFFNZD 225 NZD 179
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PDX 23:118h 24m1 stopsSTL 09:35Portland - St. Louis | Tue, Jun 3 | Delta Air LinesNZD 18120% OFFNZD 225 NZD 181
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PDX 23:118h 24m1 stopsSTL 09:35Portland - St. Louis | Thu, Jun 5 | Delta Air LinesNZD 18120% OFFNZD 225 NZD 181
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PDX 00:445h 55m1 stopsSTL 08:39Portland - St. Louis | Mon, Jun 9 | Delta Air LinesNZD 18219% OFFNZD 225 NZD 182
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PDX 00:447h 50m1 stopsSTL 10:34Portland - St. Louis | Wed, Jun 11 | Delta Air LinesNZD 18319% OFFNZD 225 NZD 183
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PDX 13:0017h 25m1 stopsSTL Invalid DatePortland - St. Louis | Sat, Apr 26 | Normal AirlineFind More FlightsFind More Flights
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Airlines Flying from Portland to St. Louis
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FAQ
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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 NZD 744.
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.
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Flight Information from Portland to St. Louis
| Cheapest one-way flight price | NZD 157 |
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| Cheapest round-trip ticket price | NZD 960 |
| Off-season for travel | February |
| Peak season for travel | January |
| Flight distance | 2,763.15 km |
| Popular airline | Alaska Airlines |