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Cheap flights from Illinois to Oregon from $68

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Oregon departing on 1/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Illinois to Oregon

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
12:07 pm - 11:12 am
ORD
-
BOI
24h 05m1 stop
Frontier Logo
12:07 pm - 10:47 am
BOI
-
ORD
45h 40m2 stops
$192Frontier
Sun, Feb 1 - Fri, Feb 6
Hawaiian Airlines Logo
6:06 pm - 11:59 pm
ORD
-
BOI
6h 53m1 stop
Hawaiian Airlines Logo
3:43 pm - 11:50 pm
BOI
-
ORD
7h 07m1 stop
$208Hawaiian Airlines
Thu, Jan 8 - Wed, Jan 14
United Airlines Logo
9:10 am - 11:57 am
ORD
-
PDX
4h 47mnonstop
United Airlines Logo
1:24 pm - 9:15 pm
PDX
-
ORD
5h 51m1 stop
$223United Airlines
Tue, Jan 6 - Wed, Jan 7
United Airlines Logo
4:15 pm - 6:56 pm
ORD
-
PDX
4h 41mnonstop
United Airlines Logo
7:00 am - 5:06 pm
PDX
-
ORD
8h 06m1 stop
$227United Airlines
Tue, Jan 20 - Tue, Jan 27
Southwest Logo
8:35 am - 11:15 am
MDW
-
PDX
4h 40mnonstop
Southwest Logo
12:30 pm - 9:10 pm
PDX
-
MDW
6h 40m1 stop
$227Southwest
Sat, Jan 10 - Sat, Jan 10
Alaska Airlines Logo
3:35 pm - 11:01 pm
ORD
-
BOI
8h 26m1 stop
Alaska Airlines Logo
6:23 am - 2:38 pm
BOI
-
ORD
7h 15m1 stop
$228Alaska Airlines
Thu, Jan 22 - Sun, Jan 25
Southwest Logo
8:35 am - 11:15 am
MDW
-
PDX
4h 40mnonstop
Southwest Logo
2:25 pm - 5:05 am
PDX
-
MDW
12h 40m1 stop
$232Southwest
Sat, Jan 17 - Tue, Jan 20
Alaska Airlines Logo
2:07 pm - 4:50 pm
ORD
-
PDX
4h 43mnonstop
Alaska Airlines Logo
8:30 am - 4:33 pm
PDX
-
ORD
6h 03m1 stop
$234Alaska Airlines
Sat, Feb 14 - Wed, Feb 18
American Airlines Logo
5:04 pm - 11:32 pm
STL
-
PDX
8h 28m1 stop
American Airlines Logo
2:50 pm - 11:59 pm
PDX
-
STL
7h 09m1 stop
$249American Airlines
Thu, Jan 8 - Mon, Jan 12
American Airlines Logo
10:43 am - 1:53 pm
ORD
-
BOI
4h 10mnonstop
American Airlines Logo
3:18 pm - 7:59 pm
BOI
-
ORD
3h 41mnonstop
$250American Airlines
Thu, Jan 8 - Wed, Jan 14

United Airlines flights from Illinois to Oregon

Our best United Airlines deals on Illinois to Oregon flight tickets
United Airlines
Jan 6
ORD9:10 amChicago O'Hare Intl
4h 47m
PDX11:57 amPortland
Jan 7
PDX1:24 pmPortland
5h 51m
1 stop
ORD9:15 pmChicago O'Hare Intl
$223
Find similar
United Airlines
Jan 20
ORD4:15 pmChicago O'Hare Intl
4h 41m
PDX6:56 pmPortland
Jan 27
PDX7:00 amPortland
8h 06m
1 stop
ORD5:06 pmChicago O'Hare Intl
$227
Find similar
United Airlines
Jan 20
ORD3:53 pmChicago O'Hare Intl
9h 00m
1 stop
PDX10:53 pmPortland
Feb 3
PDX1:24 pmPortland
5h 52m
1 stop
ORD9:16 pmChicago O'Hare Intl
$232
Find similar

Delta flights from Illinois to Oregon

Our best Delta deals on Illinois to Oregon flight tickets
Delta
Jan 7
MDW1:49 pmChicago Midway
8h 23m
1 stop
PDX8:12 pmPortland
Jan 14
PDX11:44 amPortland
8h 23m
1 stop
MDW10:07 pmChicago Midway
$237
Find similar
Delta
May 1
ORD6:00 pmChicago O'Hare Intl
7h 54m
1 stop
EUG11:54 pmEugene
May 6
EUG6:15 amEugene
9h 09m
1 stop
ORD5:24 pmChicago O'Hare Intl
$239
Find similar
Delta
Jan 9
MDW1:49 pmChicago Midway
8h 23m
1 stop
PDX8:12 pmPortland
Jan 10
PDX6:00 amPortland
8h 16m
1 stop
MDW4:16 pmChicago Midway
$247
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Oregon that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Illinois to Oregon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Sun 2/1

12:07 pm-11:12 am

1 stop24h 05m

Boise Air Term. Gowen Fld

Fri 2/6

12:07 pm-10:47 am

2 stops45h 40m

$192

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Thu 1/8

6:06 pm-11:59 pm

1 stop6h 53m

Boise Air Term. Gowen Fld

Wed 1/14

3:43 pm-11:50 pm

1 stop7h 07m

$208

ChicagoPortland

ORD - PDX

ORDPDX

Chicago O'Hare Intl

Tue 1/6

9:10 am-11:57 am

Nonstop4h 47m

Portland

Wed 1/7

1:24 pm-9:15 pm

1 stop5h 51m

$223

ChicagoPortland

ORD - PDX

ORDPDX

Chicago O'Hare Intl

Tue 1/20

4:15 pm-6:56 pm

Nonstop4h 41m

Portland

Tue 1/27

7:00 am-5:06 pm

1 stop8h 06m

$227

ChicagoPortland

MDW - PDX

MDWPDX

Chicago Midway

Sat 1/10

8:35 am-11:15 am

Nonstop4h 40m

Portland

Sat 1/10

12:30 pm-9:10 pm

1 stop6h 40m

$227

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Thu 1/22

3:35 pm-11:01 pm

1 stop8h 26m

Boise Air Term. Gowen Fld

Sun 1/25

6:23 am-2:38 pm

1 stop7h 15m

$228

ChicagoPortland

MDW - PDX

MDWPDX

Chicago Midway

Sat 1/17

8:35 am-11:15 am

Nonstop4h 40m

Portland

Tue 1/20

2:25 pm-5:05 am

1 stop12h 40m

$232

ChicagoPortland

ORD - PDX

ORDPDX

Chicago O'Hare Intl

Sat 2/14

2:07 pm-4:50 pm

Nonstop4h 43m

Portland

Wed 2/18

8:30 am-4:33 pm

1 stop6h 03m

$234

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Thu 1/8

5:04 pm-11:32 pm

1 stop8h 28m

Portland

Mon 1/12

2:50 pm-11:59 pm

1 stop7h 09m

$249

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Thu 1/8

10:43 am-1:53 pm

Nonstop4h 10m

Boise Air Term. Gowen Fld

Wed 1/14

3:18 pm-7:59 pm

Nonstop3h 41m

$250

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Oregon from

How to get the cheapest flight ticket from Illinois to Oregon

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Oregon?

The month of January is, on average, the cheapest month to fly to Oregon from Illinois, with most prices found around $266. The month of September is another great option to travel to Oregon, with average flight prices from Illinois averaging around $280.

What is the cheapest day to depart on your flight to Oregon?

On average, the least expensive day to fly to Oregon from Illinois is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $330. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Oregon is Monday, with ticket prices averaging around $409.

What is the cheapest time of day to depart on your flight to Oregon?

According to our data, the cheapest time of day to fly to Oregon is in the evening. momondo users have found flights departing from Illinois to Oregon in the evening for as low as $320. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Oregon are more costly at noon, with an average ticket price of $483. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Illinois to Oregon flight route?

Fly from Chicago Midway to Portland for the best Illinois - Oregon flight prices

How far in advance should I book a flight to Oregon?

You are more likely to see cheaper flights to Oregon from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Oregon for around $335 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Oregon from Illinois for as low as $267 on momondo.

What cabin class options are available on Illinois to Oregon flights?

There are 4 cabin classes available to choose from on Illinois to Oregon flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to Oregon flights?

You could potentially save up to 8% on your flight if you consider stops on a Illinois to Oregon flight.

Cheap Illinois to Oregon flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Oregon

Best Price Found

$118

Fastest flight time

3h 35m

Direct flights

Every day

Airports in Oregon

64 airports
The best one-way flight to Oregon from Illinois in the past 72 hours is $118. The best round-trip flight deal from Illinois to Oregon found on momondo in the last 72 hours is $280.
The fastest flight from Illinois to Oregon takes 3h 35m
Direct flights go from Illinois to Oregon every day.
There are 64 airports in Oregon. From Illinois there are direct flights to Portland (PDX), Boise Air Term. Gowen Fld (BOI).
Search flight deals

  • When did momondo last update prices for flights from Illinois to Oregon?

    Prices for flights from Illinois to Oregon were last updated today.

  • How many operators does momondo search for flights from Illinois to Oregon?

  • How old do you have to be to fly from Illinois to Oregon?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Oregon.

  • What documentation or ID do you need to fly to Oregon?

    The travel and health documents you'll need for your trip to Oregon may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Oregon. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Illinois to Oregon?

Best airlines flying from Illinois to Oregon

Compare and see reviews for airlines that fly from Illinois to Oregon with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $86Free CancellationRating
6.3
8,189 reviews
Search Spirit Airlines flights
Hawaiian AirlinesPriceFrom $134Free CancellationRating
7.8
2,820 reviews
Search Hawaiian Airlines flights
FrontierPriceFrom $138Free CancellationRating
5.8
3,081 reviews
Search Frontier flights
DeltaPriceFrom $139Free CancellationRating
7.9
8,009 reviews
Search Delta flights
Alaska AirlinesPriceFrom $200Free CancellationRating
8.0
11,479 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $211Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights
American AirlinesPriceFrom $213Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
SouthwestPriceFrom $238Free CancellationRating
7.9
4,250 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Oregon?

Finding the right flight to Oregon from Illinois is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Oregon quick and easy, saving you time and money.

Can I find flights from Illinois to Oregon with flexible booking policies on momondo?

Yes. All flights to Oregon from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Illinois to Oregon?

Once all potential Illinois to Oregon flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Illinois to Oregon right now. Can momondo alert me if prices change?

Price alerts on flights to Oregon from Illinois are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Oregon trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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Sat 1/17
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Find better results for your trip to Oregon

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