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.

$90 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

Sat, Oct 10 - Sat, Oct 17

5:00 am - 12:22 pmSTL Lambert-St Louis-PDX Portland

9h 22m1 stop Chicago O'Hare Intl

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

7h 31m1 stop Dallas/Fort Worth

$229American Airlines

Wed, Sep 9 - Sat, Sep 12

12:17 pm - 11:36 amSTL Lambert-St Louis-PDX Portland

25h 19m1 stop Las Vegas Harry Reid Intl

12:24 pm - 11:17 amPDX Portland-STL Lambert-St Louis

20h 53m1 stop Las Vegas Harry Reid Intl

$240Frontier

Thu, Oct 1 - Sun, Oct 4

12:17 pm - 11:54 amSTL Lambert-St Louis-PDX Portland

25h 37m1 stop Las Vegas Harry Reid Intl

12:38 pm - 7:17 pmPDX Portland-STL Lambert-St Louis

28h 39m1 stop Denver Intl

$240Frontier

Sat, Oct 10 - Wed, Oct 14

5:33 pm - 11:44 pmSTL Lambert-St Louis-PDX Portland

8h 11m1 stop Minneapolis St Paul

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

8h 43m1 stop Minneapolis St Paul

$283Delta

Wed, Sep 23 - Sat, Sep 26

6:55 pm - 11:40 pmSTL Lambert-St Louis-PDX Portland

6h 45m1 stop Salt Lake City

12:25 am - 8:40 amPDX Portland-STL Lambert-St Louis

6h 15m1 stop Minneapolis St Paul

$289Delta

Thu, Oct 15 - Sun, Oct 18

6:10 pm - 12:10 amSTL Lambert-St Louis-PDX Portland

8h 00m1 stop Chicago Midway

11:35 pm - 9:00 amPDX Portland-STL Lambert-St Louis

7h 25m1 stop Chicago Midway

$289Southwest

Wed, Sep 23 - Sun, Sep 27

5:00 am - 10:55 amSTL Lambert-St Louis-PDX Portland

7h 55m1 stop Chicago O'Hare Intl

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

9h 10m1 stop Chicago O'Hare Intl

$289American Airlines

Sun, Nov 1 - Thu, Nov 5

7:30 am - 5:37 pmORD Chicago O'Hare Intl-PDX Portland

12h 07m1 stop Minneapolis St Paul

3:47 pm - 10:01 amPDX Portland-ORD Chicago O'Hare Intl

16h 14m1 stop Denver Intl

$297Multiple Airlines

Sat, Sep 5 - Wed, Sep 9

6:00 pm - 8:20 pmMDW Chicago Midway-PDX Portland

4h 20mnonstop

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

3h 55mnonstop

$301Southwest

Wed, Nov 4 - Mon, Nov 9

2:07 pm - 4:50 pmORD Chicago O'Hare Intl-PDX Portland

4h 43mnonstop

5:43 pm - 5:40 amPDX Portland-ORD Chicago O'Hare Intl

9h 57m1 stop Seattle/Tacoma Intl

$301Alaska Airlines

Recent last minute flight deals from Illinois to Portland

Sat, Aug 22 - Sat, Aug 29

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

$308Frontier

Fri, Aug 21 - Sat, Aug 29

9:20 pm - 11:35 amORD Chicago O'Hare Intl-PDX Portland

16h 15m1 stop Los Angeles

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

10h 03m1 stop Los Angeles

$328Frontier

Sat, Aug 22 - Tue, Aug 25

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

4h 28mnonstop

5:56 pm - 1:36 pmPDX Portland-ORD Chicago O'Hare Intl

17h 40m1 stop Denver Intl

$378Multiple Airlines

Sat, Aug 22 - Sat, Aug 29

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

$378Multiple Airlines

Sat, Aug 22 - Tue, Aug 25

9:29 pm - 11:58 pmORD Chicago O'Hare Intl-PDX Portland

4h 29mnonstop

5:59 am - 12:12 pmPDX Portland-ORD Chicago O'Hare Intl

4h 13mnonstop

$437American Airlines

Sat, Aug 22 - Wed, Aug 26

9:00 am - 11:34 amORD Chicago O'Hare Intl-PDX Portland

4h 34mnonstop

11:34 pm - 5:32 amPDX Portland-ORD Chicago O'Hare Intl

3h 58mnonstop

$437American Airlines

Sat, Aug 22 - Tue, Aug 25

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

4h 29mnonstop

10:35 am - 4:48 pmPDX Portland-ORD Chicago O'Hare Intl

4h 13mnonstop

$437United Airlines

Sat, Aug 22 - Sat, Aug 29

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

$437Alaska Airlines

Wed, Aug 19 - Wed, Aug 26

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

4h 28mnonstop

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

6h 48m1 stop Seattle/Tacoma Intl

$447Alaska Airlines

Wed, Aug 19 - Wed, Aug 26

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

4h 29mnonstop

2:27 pm - 8:40 pmPDX Portland-ORD Chicago O'Hare Intl

4h 13mnonstop

$457United Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$90

Best time to beat the crowds with an average 21% 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

$90 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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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