PDX

$120 Find Cheap Flights from Illinois to Portland - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Portland departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Illinois to Portland

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Portland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Illinois to Portland

Thu, Oct 1 - Mon, Oct 5
Frontier Logo
12:46 pm - 8:39 pm
STL
-
PDX
9h 53m
1 stop
Frontier Logo
9:34 pm - 11:51 am
PDX
-
STL
12h 17m
1 stop
$240Frontier
Mon, Aug 24 - Sat, Sep 5
Frontier Logo
7:58 pm - 5:11 pm
STL
-
PDX
23h 13m
1 stop
Frontier Logo
12:20 pm - 7:13 pm
PDX
-
STL
28h 53m
1 stop
$242Frontier
Sat, Sep 12 - Sat, Sep 19
United Airlines Logo
1:19 pm - 7:18 pm
MLI
-
PDX
7h 59m
1 stop
United Airlines Logo
8:17 am - 7:46 pm
PDX
-
MLI
9h 29m
1 stop
$291United Airlines
Sat, Aug 22 - Fri, Aug 28
Delta Logo
11:08 am - 6:55 pm
MLI
-
PDX
9h 47m
1 stop
Delta Logo
12:35 am - 4:25 pm
PDX
-
MLI
13h 50m
2 stops
$296Delta
Thu, Aug 27 - Mon, Aug 31
Multiple Airlines Logo
2:18 pm - 8:49 pm
ORD
-
PDX
8h 31m
1 stop
Multiple Airlines Logo
12:20 pm - 1:36 pm
PDX
-
ORD
23h 16m
1 stop
$303Multiple Airlines
Thu, Aug 27 - Tue, Sep 1
Multiple Airlines Logo
2:22 pm - 4:50 pm
ORD
-
PDX
4h 28mnonstop
Multiple Airlines Logo
5:56 pm - 1:36 pm
PDX
-
ORD
17h 40m
1 stop
$304Multiple Airlines
Wed, Aug 26 - Wed, Sep 2
United Airlines Logo
1:30 pm - 5:49 pm
ORD
-
PDX
6h 19m
1 stop
United Airlines Logo
2:27 pm - 8:40 pm
PDX
-
ORD
4h 13mnonstop
$307United Airlines
Sat, Aug 15 - Sat, Aug 22
Southwest Logo
6:55 am - 11:50 am
MDW
-
PDX
6h 55m
1 stop
Southwest Logo
7:35 am - 1:35 pm
PDX
-
MDW
4h 00mnonstop
$307Southwest
Sat, Sep 19 - Wed, Sep 23
Southwest Logo
6:00 pm - 8:15 pm
MDW
-
PDX
4h 15mnonstop
Southwest Logo
5:50 am - 4:35 pm
PDX
-
MDW
8h 45m
2 stops
$308Southwest
Fri, Aug 14 - Mon, Aug 17
Delta Logo
7:25 pm - 11:20 pm
MDW
-
PDX
5h 55m
1 stop
Delta Logo
12:35 am - 8:39 am
PDX
-
MDW
6h 04m
1 stop
$327Delta
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Good to know

Low season

January

Cheapest flight

$120
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 14% increase in price.
Flight from St. Louis to Portland

FAQs for booking flights from Illinois to Portland

  • How does KAYAK find such low prices on flights from Illinois to Portland?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Portland.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Portland?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portland from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to Portland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Portland with an airline and back to Illinois with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Portland?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Portland from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Seaside
Vancouver
Salem
The Dalles
Stevenson
Lake Oswego
Clackamas
Government Camp
Carson
Kelso
Gleneden Beach
Gladstone
Oceanside
Dundee
Durham

Everything you need to know for your flight to Portland

Information on the airport you'll fly into in Portland

Portland (PDX)