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.

$132 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

7:45 am - 12:03 pmSTL Lambert-St Louis-PDX Portland

6h 18m1 stop Salt Lake City

11:43 am - 8:51 pmPDX Portland-STL Lambert-St Louis

7h 08m1 stop Detroit Metropolitan Wayne County

$253Delta

Sat, Oct 24 - Thu, Oct 29

7:42 pm - 10:54 amSTL Lambert-St Louis-PDX Portland

17h 12m1 stop Denver Intl

12:02 pm - 7:14 pmPDX Portland-STL Lambert-St Louis

29h 12m1 stop Denver Intl

$254Frontier

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

Wed, Oct 21 - Sat, Oct 24

8:35 am - 3:05 pmSTL Lambert-St Louis-PDX Portland

8h 30m1 stop Sacramento Intl

2:40 pm - 10:55 pmPDX Portland-STL Lambert-St Louis

6h 15m1 stop Las Vegas Harry Reid Intl

$254Southwest

Sat, Oct 24 - Tue, Oct 27

7:42 pm - 10:54 amSTL Lambert-St Louis-PDX Portland

17h 12m1 stop Denver Intl

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

25h 21m1 stop Denver Intl

$265Frontier

Tue, Oct 20 - Sat, Oct 24

11:33 am - 7:29 pmMLI Moline Quad-City-PDX Portland

9h 56m1 stop Dallas/Fort Worth

5:20 am - 4:04 pmPDX Portland-MLI Moline Quad-City

8h 44m1 stop Dallas/Fort Worth

$301American Airlines

Tue, Oct 20 - Sat, Oct 24

4:38 pm - 11:39 pmMLI Moline Quad-City-PDX Portland

9h 01m1 stop Dallas/Fort Worth

5:20 am - 4:04 pmPDX Portland-MLI Moline Quad-City

8h 44m1 stop Dallas/Fort Worth

$301American Airlines

Wed, Oct 21 - Wed, Oct 28

6:21 am - 2:51 pmSTL Lambert-St Louis-PDX Portland

10h 30m2 stops Minneapolis St Paul Seattle/Tacoma Intl

8:44 pm - 9:49 amPDX Portland-STL Lambert-St Louis

11h 05m2 stops Seattle/Tacoma Intl Detroit Metropolitan Wayne County

$313Delta

Tue, Oct 20 - Tue, Oct 27

6:30 am - 10:54 amORD Chicago O'Hare Intl-PDX Portland

6h 24m1 stop Denver Intl

7:00 am - 1:18 pmPDX Portland-ORD Chicago O'Hare Intl

4h 18mnonstop

$318Multiple Airlines

Tue, Oct 20 - Sat, Oct 24

6:30 am - 10:54 amORD Chicago O'Hare Intl-PDX Portland

6h 24m1 stop Denver Intl

7:00 am - 1:18 pmPDX Portland-ORD Chicago O'Hare Intl

4h 18mnonstop

$318Multiple Airlines

Recent last minute flight deals from Illinois to Portland

Thu, Sep 17 - Sun, Sep 20

6:30 am - 11:43 amORD Chicago O'Hare Intl-PDX Portland

7h 13m1 stop Denver Intl

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

9h 45m1 stop Denver Intl

$368Frontier

Thu, Sep 17 - Sun, Sep 20

6:30 am - 11:43 amORD Chicago O'Hare Intl-PDX Portland

7h 13m1 stop Denver Intl

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

9h 45m1 stop Denver Intl

$368Frontier

Wed, Sep 16 - Sun, Sep 20

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

4h 28mnonstop

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

9h 45m1 stop Denver Intl

$428Multiple Airlines

Wed, Sep 16 - Fri, Sep 18

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

4h 28mnonstop

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

9h 45m1 stop Denver Intl

$428Multiple Airlines

Thu, Sep 17 - Sat, Sep 19

5:43 am - 10:59 amSTL Lambert-St Louis-PDX Portland

7h 16m1 stop Dallas/Fort Worth

11:08 pm - 10:18 amPDX Portland-STL Lambert-St Louis

9h 10m1 stop Chicago O'Hare Intl

$451American Airlines

Thu, Sep 17 - Mon, Sep 21

5:43 am - 10:59 amSTL Lambert-St Louis-PDX Portland

7h 16m1 stop Dallas/Fort Worth

7:00 am - 6:04 pmPDX Portland-STL Lambert-St Louis

9h 04m1 stop Dallas/Fort Worth

$451American Airlines

Tue, Sep 15 - Wed, Sep 16

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

$476Alaska Airlines

Wed, Sep 16 - Sat, Sep 19

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

$477Alaska Airlines

Sat, Sep 19 - Fri, Sep 25

10:15 am - 12:30 pmMDW Chicago Midway-PDX Portland

4h 15mnonstop

11:35 am - 5:35 pmPDX Portland-MDW Chicago Midway

4h 00mnonstop

$492Southwest

Thu, Sep 17 - Tue, Sep 22

8:50 pm - 11:10 pmMDW Chicago Midway-PDX Portland

4h 20mnonstop

11:30 pm - 5:25 amPDX Portland-MDW Chicago Midway

3h 55mnonstop

$492Southwest

Useful Info

Low season	January
High season	July
Cheapest flight	$132

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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$132 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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