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.

$127 CHEAP FLIGHTS from Illinois to Portland

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Cheap Flights from Illinois to Portland

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Illinois to Portland

Wed, Oct 28 - Tue, Nov 3

4:18 pm - 11:07 amSTL Lambert-St Louis-PDX Portland

20h 49m1 stop Denver Intl

12:02 pm - 3:23 pmPDX Portland-STL Lambert-St Louis

25h 21m1 stop Denver Intl

$238Frontier

Wed, Oct 21 - Sat, Oct 24

8:03 am - 1:39 pmSTL Lambert-St Louis-PDX Portland

7h 36m1 stop Phoenix Sky Harbor Intl

1:12 pm - 12:19 amPDX Portland-STL Lambert-St Louis

9h 07m1 stop Chicago O'Hare Intl

$253American Airlines

Wed, Oct 21 - Wed, Oct 28

5:20 am - 11:35 amSTL Lambert-St Louis-PDX Portland

8h 15m1 stop Las Vegas Harry Reid Intl

1:10 pm - 11:55 pmPDX Portland-STL Lambert-St Louis

8h 45m1 stop Las Vegas Harry Reid Intl

$253Southwest

Tue, Oct 20 - Wed, Oct 28

5:35 pm - 11:44 pmSTL Lambert-St Louis-PDX Portland

8h 09m1 stop Minneapolis St Paul

6:00 am - 4:43 pmPDX Portland-STL Lambert-St Louis

8h 43m1 stop Minneapolis St Paul

$253Delta

Tue, Oct 20 - Tue, Oct 27

6:21 am - 10:34 amSTL Lambert-St Louis-PDX Portland

6h 13m1 stop Minneapolis St Paul

1:44 pm - 11:21 pmPDX Portland-STL Lambert-St Louis

7h 37m1 stop Minneapolis St Paul

$253Delta

Tue, Oct 20 - Tue, Oct 27

5:10 am - 9:36 amSTL Lambert-St Louis-PDX Portland

6h 26m1 stop Denver Intl

11:30 pm - 8:55 amPDX Portland-STL Lambert-St Louis

7h 25m1 stop Chicago O'Hare Intl

$253United Airlines

Wed, Oct 21 - Sat, Oct 24

8:03 am - 1:39 pmSTL Lambert-St Louis-PDX Portland

7h 36m1 stop Phoenix Sky Harbor Intl

11:49 pm - 9:20 amPDX Portland-STL Lambert-St Louis

7h 31m1 stop Dallas/Fort Worth

$253American Airlines

Wed, Nov 4 - Sat, Nov 7

6:30 am - 1:10 pmSTL Lambert-St Louis-PDX Portland

8h 40m1 stop Denver Intl

9:50 am - 6:20 pmPDX Portland-STL Lambert-St Louis

6h 30m1 stop Denver Intl

$254Southwest

Mon, Nov 9 - Sat, Nov 14

1:40 pm - 6:09 pmSTL Lambert-St Louis-PDX Portland

6h 29m1 stop Denver Intl

5:00 am - 12:38 pmPDX Portland-STL Lambert-St Louis

5h 38m1 stop Denver Intl

$270United Airlines

Mon, Oct 19 - Tue, Oct 27

8:00 pm - 10:54 amSTL Lambert-St Louis-PDX Portland

16h 54m1 stop Denver Intl

12:02 pm - 5:40 pmPDX Portland-STL Lambert-St Louis

27h 38m2 stops Denver Intl Atlanta Hartsfield-Jackson

$320Frontier

Recent last minute flight deals from Illinois to Portland

Wed, Sep 23 - Sat, Sep 26

1:21 pm - 11:36 amORD Chicago O'Hare Intl-PDX Portland

24h 15m1 stop Las Vegas Harry Reid Intl

12:24 pm - 5:38 amPDX Portland-ORD Chicago O'Hare Intl

15h 14m1 stop Las Vegas Harry Reid Intl

$388Frontier

Fri, Sep 18 - Sun, Sep 20

8:55 pm - 11:36 amORD Chicago O'Hare Intl-PDX Portland

16h 41m1 stop Las Vegas Harry Reid Intl

12:38 pm - 12:23 amPDX Portland-ORD Chicago O'Hare Intl

9h 45m1 stop Denver Intl

$392Frontier

Tue, Sep 22 - Tue, Sep 29

4:33 pm - 11:23 pmMLI Moline Quad-City-PDX Portland

8h 50m1 stop Dallas/Fort Worth

2:07 pm - 11:18 pmPDX Portland-MLI Moline Quad-City

7h 11m1 stop Dallas/Fort Worth

$408American Airlines

Tue, Sep 22 - Tue, Sep 29

5:08 pm - 10:52 pmMLI Moline Quad-City-PDX Portland

7h 44m1 stop Chicago O'Hare Intl

10:43 am - 10:38 pmPDX Portland-MLI Moline Quad-City

9h 55m2 stops Denver Intl Chicago O'Hare Intl

$426United Airlines

Tue, Sep 22 - Sat, Sep 26

2:22 pm - 4:50 pmORD Chicago O'Hare Intl-PDX Portland

4h 28mnonstop

12:24 pm - 5:38 amPDX Portland-ORD Chicago O'Hare Intl

15h 14m1 stop Las Vegas Harry Reid Intl

$443Multiple Airlines

Tue, Sep 22 - Sat, Sep 26

2:22 pm - 4:50 pmORD Chicago O'Hare Intl-PDX Portland

4h 28mnonstop

12:24 pm - 5:38 amPDX Portland-ORD Chicago O'Hare Intl

15h 14m1 stop Las Vegas Harry Reid Intl

$444Multiple Airlines

Fri, Sep 18 - Sun, Sep 20

3:34 pm - 11:23 pmSTL Lambert-St Louis-PDX Portland

9h 49m1 stop Dallas/Fort Worth

5:10 am - 1:40 pmPDX Portland-STL Lambert-St Louis

6h 30m1 stop Phoenix Sky Harbor Intl

$451American Airlines

Tue, Sep 22 - Sat, Sep 26

2:22 pm - 4:50 pmORD Chicago O'Hare Intl-PDX Portland

4h 28mnonstop

7:06 am - 1:26 pmPDX Portland-ORD Chicago O'Hare Intl

4h 20mnonstop

$470Alaska Airlines

Fri, Sep 18 - Sat, Sep 19

2:18 pm - 10:45 pmORD Chicago O'Hare Intl-PDX Portland

10h 27m1 stop San Diego

7:06 am - 1:26 pmPDX Portland-ORD Chicago O'Hare Intl

4h 20mnonstop

$485Alaska Airlines

Tue, Sep 22 - Wed, Sep 30

4:45 pm - 7:18 pmORD Chicago O'Hare Intl-PDX Portland

4h 33mnonstop

8:30 am - 2:43 pmPDX Portland-ORD Chicago O'Hare Intl

4h 13mnonstop

$497United Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$127

Best time to beat the crowds with an average 24% drop in price.

Most popular time to fly with an average 13% increase in price.

Flight from St. Louis 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.

Seaside

Vancouver

Salem

The Dalles

Clackamas

Stevenson

Lake Oswego

Carson

Kelso

Government Camp

Gleneden Beach

Gladstone

Oceanside

Dundee

Durham

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$127 Find Cheap Flights from Illinois to Portland - Compare and Save

Cheap Flights from Illinois to Portland

Recent round-trip flight deals from Illinois to Portland

Recent one-way flight deals from Illinois to Portland

Recent last minute flight deals from Illinois to Portland

Recent direct flight deals from Illinois to Portland

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Cheapest flight

FAQs for booking flights from Illinois to Portland

Traveling to a place near Portland?

More options for your flight to Portland

Complete your trip to Portland with a hotel stay or car rental

Information on the airport you'll fly into in Portland

Cabin class types available on flights to Illinois

Find direct flights for Portland

Flights from domestic origins to Portland

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