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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

$86 CHEAP FLIGHTS from Illinois to Portland

PDX

KAYAK searches hundreds of travel sites at once for deals on flights 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, May 13 - Mon, May 18

6:51 pm - 8:51 pm

STL

PDX

28h 00m

1 stop

8:46 pm - 6:06 pm

PDX

STL

19h 20m

1 stop

$196Frontier

Tue, Apr 21 - Tue, Apr 28

1:45 pm - 8:45 pm

STL

PDX

9h 00m

2 stops

11:55 pm - 9:30 am

PDX

STL

7h 35m

1 stop

$206Southwest

Sat, May 2 - Thu, May 7

7:21 pm - 11:50 am

ORD

PDX

18h 29m

1 stop

5:31 pm - 6:39 am

PDX

ORD

11h 08m

1 stop

$210Frontier

Wed, May 6 - Wed, May 6

5:30 am - 11:05 am

MDW

PDX

7h 35m

1 stop

7:55 pm - 5:00 am

PDX

MDW

7h 05m

1 stop

$215Southwest

Sat, Apr 25 - Fri, May 1

6:41 pm - 11:57 pm

MLI

PDX

7h 16m

1 stop

12:59 am - 11:34 am

PDX

MLI

8h 35m

1 stop

$291American Airlines

Sat, May 2 - Mon, May 4

3:48 pm - 9:38 pm

MLI

PDX

7h 50m

1 stop

3:16 pm - 11:54 pm

PDX

MLI

6h 38m

1 stop

$330American Airlines

Thu, May 28 - Mon, Jun 1

1:32 pm - 8:54 pm

CMI

PDX

9h 22m

2 stops

11:40 pm - 8:54 am

PDX

CMI

7h 14m

1 stop

$364United Airlines

Sat, Apr 4 - Fri, Apr 17

6:00 am - 3:57 pm

MLI

PDX

11h 57m

2 stops

12:30 am - 4:28 pm

PDX

MLI

13h 58m

2 stops

$366Delta

Fri, May 1 - Mon, May 4

7:05 pm - 11:59 pm

MLI

PDX

6h 54m

1 stop

11:55 pm - 10:04 am

PDX

MLI

8h 09m

1 stop

$369United Airlines

Sat, Apr 4 - Fri, Apr 17

6:00 am - 3:57 pm

MLI

PDX

11h 57m

2 stops

12:30 am - 4:28 pm

PDX

MLI

13h 58m

2 stops

$395Delta

Useful Info

Low season	January
High season	July
Cheapest flight	$86

Best time to beat the crowds with an average 17% drop in price.

Most popular time to fly with an average 2% 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

Lake Oswego

Stevenson

Clackamas

Government Camp

Carson

Kelso

Gleneden Beach

Gladstone

Oceanside

Dundee

Durham

Everything you need to know for your flight to Portland

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in Portland

Portland (PDX)

PDX

$86 Find Cheap Flights from Illinois to Portland

KAYAK searches hundreds of travel sites at once for deals on flights to Portland

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

Good to know

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?

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

Find direct flights for Portland

Flights to other popular destinations

Flights from domestic origins to Portland

Choose which airport to fly into in Portland

Find deals for your return flight