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.

$135 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 14 - Tue, Oct 20

4:19 pm - 10:54 amSTL Lambert-St Louis-PDX Portland

20h 35m1 stop Denver Intl

11:49 am - 3:24 pmPDX Portland-STL Lambert-St Louis

25h 35m1 stop Denver Intl

$261Frontier

Mon, Oct 12 - Tue, Oct 20

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

16h 54m1 stop Denver Intl

11:49 am - 3:24 pmPDX Portland-STL Lambert-St Louis

25h 35m1 stop Denver Intl

$261Frontier

Tue, Oct 20 - Sat, Oct 24

5:03 pm - 11:59 pmMLI Moline Quad-City-PDX Portland

8h 56m1 stop Chicago O'Hare Intl

1:12 pm - 12:11 amPDX Portland-MLI Moline Quad-City

8h 59m1 stop Chicago O'Hare Intl

$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

Tue, Oct 20 - Sat, Oct 24

2:28 pm - 10:23 pmMLI Moline Quad-City-PDX Portland

9h 55m1 stop Chicago O'Hare Intl

11:30 pm - 9:44 amPDX Portland-MLI Moline Quad-City

8h 14m1 stop Chicago O'Hare Intl

$301United Airlines

Tue, Nov 10 - Sat, Nov 14

11:05 am - 11:46 pmMLI Moline Quad-City-PDX Portland

14h 41m2 stops Atlanta Hartsfield-Jackson Minneapolis St Paul

11:51 am - 11:08 pmPDX Portland-MLI Moline Quad-City

9h 17m1 stop Atlanta Hartsfield-Jackson

$306Delta

Tue, Sep 22 - Thu, Oct 15

2:18 pm - 8:49 pmORD Chicago O'Hare Intl-PDX Portland

8h 31m1 stop San Diego

12:11 pm - 5:16 amPDX Portland-ORD Chicago O'Hare Intl

15h 05m1 stop Las Vegas Harry Reid Intl

$306Multiple Airlines

Tue, Sep 29 - Tue, Oct 13

2:18 pm - 8:49 pmORD Chicago O'Hare Intl-PDX Portland

8h 31m1 stop San Diego

11:49 am - 12:24 amPDX Portland-ORD Chicago O'Hare Intl

10h 35m1 stop Denver Intl

$306Multiple Airlines

Tue, Nov 10 - Fri, Nov 13

11:05 am - 11:46 pmMLI Moline Quad-City-PDX Portland

14h 41m2 stops Atlanta Hartsfield-Jackson Minneapolis St Paul

12:35 am - 4:33 pmPDX Portland-MLI Moline Quad-City

13h 58m2 stops Minneapolis St Paul Atlanta Hartsfield-Jackson

$311Delta

Tue, Oct 20 - Sat, Oct 24

10:49 am - 5:47 pmMLI Moline Quad-City-PDX Portland

8h 58m2 stops Chicago O'Hare Intl Denver Intl

10:43 am - 8:43 pmPDX Portland-MLI Moline Quad-City

8h 00m1 stop Denver Intl

$316United Airlines

Recent last minute flight deals from Illinois to Portland

Sat, Aug 29 - Sat, Sep 5

2:41 pm - 5:11 pmORD Chicago O'Hare Intl-PDX Portland

28h 30m1 stop Denver Intl

5:56 pm - 5:59 amPDX Portland-ORD Chicago O'Hare Intl

10h 03m1 stop Los Angeles Los Angeles

$326Frontier

Sat, Aug 29 - Sat, Sep 5

2:41 pm - 5:11 pmORD Chicago O'Hare Intl-PDX Portland

28h 30m1 stop Denver Intl

12:20 pm - 1:36 pmPDX Portland-ORD Chicago O'Hare Intl

23h 16m1 stop Denver Intl

$328Frontier

Sat, Aug 29 - Sat, Sep 5

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

4h 28mnonstop

5:56 pm - 5:59 amPDX Portland-ORD Chicago O'Hare Intl

10h 03m1 stop Los Angeles Los Angeles

$378Multiple Airlines

Sun, Aug 30 - Sun, Sep 27

8:11 pm - 5:21 pmORD Chicago O'Hare Intl-PDX Portland

23h 10m1 stop Las Vegas Harry Reid Intl

9:32 pm - 6:20 amPDX Portland-ORD Chicago O'Hare Intl

6h 48m1 stop Seattle/Tacoma Intl

$379Multiple Airlines

Sun, Aug 30 - Sun, Sep 27

8:50 am - 11:28 amORD Chicago O'Hare Intl-PDX Portland

4h 38mnonstop

7:02 am - 1:15 pmPDX Portland-ORD Chicago O'Hare Intl

4h 13mnonstop

$420United Airlines

Sun, Aug 30 - Sun, Sep 27

9:20 pm - 11:30 pmMDW Chicago Midway-PDX Portland

4h 10mnonstop

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

3h 55mnonstop

$420Southwest

Sat, Aug 29 - Sat, Sep 5

7:00 am - 9:29 amORD Chicago O'Hare Intl-PDX Portland

4h 29mnonstop

8:17 am - 2:30 pmPDX Portland-ORD Chicago O'Hare Intl

4h 13mnonstop

$423United Airlines

Sun, Aug 30 - Sun, Sep 27

9:20 pm - 11:30 pmMDW Chicago Midway-PDX Portland

4h 10mnonstop

4:15 pm - 4:30 amPDX Portland-MDW Chicago Midway

10h 15m1 stop San Diego

$430Southwest

Thu, Aug 27 - Wed, Sep 2

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

$446Alaska Airlines

Thu, Aug 27 - Tue, Sep 1

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

$446Alaska Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$135

Best time to beat the crowds with an average 23% drop in price.

Most popular time to fly with an average 16% 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

Government Camp

Kelso

Gleneden Beach

Gladstone

Oceanside

Dundee

Durham

Everything you need to know for your flight to Portland

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Portland (PDX)

PDX

$135 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?

Everything you need to know for your flight to Portland

Information on the airport you'll fly into in Portland

Cabin class types available on flights to Illinois

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

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Choose which airport to fly into in Portland

Find deals for your return flight