
$109 Cheap flight deals from Portland (PDX) to Alton (STL)
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This Weekend's Flight Deals from Portland to Alton
This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Airfares from $109 One Way, $229 Round Trip from Portland to Alton
Prices starting at $229 for return flights and $109 for one-way flights to Alton were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Alton economy flight packages

The Wildwood Hotel
Dec 19 - Dec 26
Portland (PDX) to St. Louis (STL)
St. Louis (STL) to Portland (PDX)
Reviewed on Oct 16, 2025

The Cheshire
Dec 19 - Dec 26
Portland (PDX) to St. Louis (STL)
St. Louis (STL) to Portland (PDX)
Reviewed on Sep 2, 2025

The Knight Center at Washington University
Dec 19 - Dec 26
Portland (PDX) to St. Louis (STL)
St. Louis (STL) to Portland (PDX)
Reviewed on Sep 15, 2025
More About Flying To Alton from Portland
Route Information for Flights from Portland to Alton
Origin Airport IATA Code | PDX |
|---|---|
Destination Airport IATA Code | STL |
Distance | |
Direct Flight Airlines | |
Earliest Flight Arrival | |
Latest Flight Arrival |
Portland to Alton
Orbitz can provide you with the greatest deals on a wide range of Portland to Alton flights. Orbitz offers guaranteed low prices and offers you the convenience of cutting-edge mobile tools thus providing you with your best travel experience ever.
Mobile Apps for Portland to Alton Flights
You can use our mobile app to find the cheapest prices for flights from Portland to Alton. With this cutting-edge technology, you can check up on your flight’s status, gate number and luggage claim handling, and reserve exclusive deals on top hotels at short notice.
Loyalty Rewarded
For travelers who regularly book Portland to Alton flights, our frequent flyer program offers even more low-cost air tickets. You will be able to store your miles in your personal Orbitz account and add them with ease to your future reservations.
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Budget Flying Made Simple
Finding cheap flights from Portland to Alton is easy with Orbitz. You can pick and choose airlines for your international flights to create inexpensive yet convenient travel arrangements.
Flights from Portland
- Portland to Los Angeles
- Portland to Phoenix
- Portland to Dallas
- Portland to New York
- Portland to Chicago
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- Portland to Paris
- Portland to San Francisco
- Portland to Orlando
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- Portland to London
- Portland to New Orleans
- Portland to Washington
- Portland to Bangkok
- Portland to Detroit
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- Portland to Toronto
- Portland to Edmonton
- Portland to Beijing
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Portland Airports
Alton Airports
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Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.
Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.
Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.

