How many flights depart from Illinois to Oregon on average per day?

As of July 2025, 22 flights take off from Illinois and land in Oregon each day. The most common flight departure time for this route is 8:00PM, with 36% of daily flights taking off in the afternoon.

What airlines fly to Oregon?

United Airlines, American Airlines and Alaska Airlines are the top three most popular airlines that fly to Oregon from Illinois according to our data. United Airlines is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Oregon. Keep in mind that there are 8 different airlines that fly to Oregon on a routine basis, so you have a few additional options to choose from.

How many flights depart from Illinois to Oregon on average per week?

As of July 2025, there are 155 flights per week flying from Illinois to Oregon. The most common day of the week flights depart is Thu, with 25% of flights taking off on this day.

What is the cheapest airline that flies from Illinois to Oregon?

Spirit Airlines, Southwest, and United Airlines are the most popular carriers operating from Illinois to Oregon

How long is the flight from Illinois to Oregon?

Flight times from Illinois to Oregon vary, but if you’re flying out of Chicago and flying into Portland (one of the most popular routes), then the duration is 4h 20m on average. Another popular route from Illinois to Oregon is flying from Peoria to Portland, which will take roughly 6h 54m. Keep in mind that layovers or delays could extend your travel time.

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?

As of July 2025, there are 8 operators available to choose from 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.

$79 Cheap Flights from Illinois to Oregon in 2025

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Illinois to Oregon

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

6:00 am - 6:57 pmORD-PDX

14h 57m1 stop

7:52 pm - 4:50 amPDX-ORD

6h 58m1 stop

$172Spirit Airlines

Find Deal

Tue, Aug 19 - Fri, Aug 22

6:00 am - 6:57 pmORD-PDX

14h 57m1 stop

7:52 pm - 4:50 amPDX-ORD

6h 58m1 stop

$174Spirit Airlines

Find Deal

Mon, Aug 18 - Mon, Aug 25

7:00 am - 9:25 amORD-PDX

4h 25mnonstop

7:00 am - 1:09 pmPDX-ORD

4h 09mnonstop

$179Alaska Airlines

Find Deal

Sat, Aug 30 - Sun, Aug 31

2:10 pm - 4:25 pmMDW-PDX

4h 15mnonstop

6:55 am - 12:55 pmPDX-MDW

4h 00mnonstop

$179Southwest

Find Deal

Sat, Aug 30 - Sun, Aug 31

7:00 am - 9:25 amORD-PDX

4h 25mnonstop

7:00 am - 1:11 pmPDX-ORD

4h 11mnonstop

$188Alaska Airlines

Find Deal

Sun, Aug 31 - Tue, Sep 16

8:30 pm - 10:45 pmMDW-PDX

4h 15mnonstop

6:55 am - 12:55 pmPDX-MDW

4h 00mnonstop

$188Southwest

Find Deal

Tue, Aug 26 - Sun, Aug 31

9:40 am - 12:27 pmORD-BOI

3h 47mnonstop

1:07 pm - 5:45 pmBOI-ORD

3h 38mnonstop

$196American Airlines

Find Deal

Sat, Sep 6 - Sat, Sep 13

9:40 pm - 12:05 amORD-PDX

4h 25mnonstop

11:58 pm - 5:53 amPDX-ORD

3h 55mnonstop

$197American Airlines

Find Deal

Wed, Oct 1 - Wed, Oct 29

8:45 am - 11:31 amORD-BOI

3h 46mnonstop

12:35 pm - 5:08 pmBOI-ORD

3h 33mnonstop

$239United Airlines

Find Deal

Tue, Sep 23 - Tue, Sep 30

8:45 am - 11:31 amORD-BOI

3h 46mnonstop

2:12 pm - 11:15 pmBOI-ORD

8h 03m1 stop

$258United Airlines

Find Deal

Wed, Sep 24 - Wed, Oct 1

Spirit Airlines flights from Illinois to Oregon

Our best Spirit Airlines deals on Illinois to Oregon flight tickets

Spirit Airlines

Aug 19

ORD6:00 amChicago O'Hare Intl

14h 57m

1 stop

PDX6:57 pmPortland

Aug 22

PDX7:52 pmPortland

6h 58m

1 stop

ORD4:50 amChicago O'Hare Intl

$172

Find similar

Spirit Airlines

Aug 18

ORD6:00 amChicago O'Hare Intl

14h 57m

1 stop

PDX6:57 pmPortland

Aug 25

PDX7:52 pmPortland

6h 58m

1 stop

ORD4:50 amChicago O'Hare Intl

$174

Find similar

Spirit Airlines

Oct 25

ORD6:00 amChicago O'Hare Intl

15h 04m

1 stop

PDX7:04 pmPortland

Oct 28

PDX8:04 pmPortland

6h 45m

1 stop

ORD4:49 amChicago O'Hare Intl

$175

Find similar

Frontier flights from Illinois to Oregon

Our best Frontier deals on Illinois to Oregon flight tickets

Frontier

Sep 20

ORD8:25 amChicago O'Hare Intl

28h 12m

1 stop

BOI11:37 amBoise Air Term. Gowen Fld

Oct 12

BOI12:48 pmBoise Air Term. Gowen Fld

10h 05m

1 stop

ORD11:53 pmChicago O'Hare Intl

$235

Find similar

Frontier

Aug 6

STL7:29 pmLambert-St Louis

17h 17m

1 stop

BOI11:46 amBoise Air Term. Gowen Fld

Aug 10

BOI12:36 pmBoise Air Term. Gowen Fld

19h 35m

1 stop

STL9:11 amLambert-St Louis

$237

Find similar

Frontier

Aug 9

MDW2:44 pmChicago Midway

10h 40m

1 stop

PDX11:24 pmPortland

Aug 16

PDX6:35 amPortland

12h 19m

1 stop

MDW8:54 pmChicago Midway

$238

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoPortland

ORD - PDX

ORDPDX

Chicago O'Hare Intl

Tue 8/19

6:00 am-6:57 pm

1 stop14h 57m

Portland

Fri 8/22

7:52 pm-4:50 am

1 stop6h 58m

$172

ChicagoPortland

ORD - PDX

ORDPDX

Chicago O'Hare Intl

Mon 8/18

6:00 am-6:57 pm

1 stop14h 57m

Portland

Mon 8/25

7:52 pm-4:50 am

1 stop6h 58m

$174

ChicagoPortland

ORD - PDX

ORDPDX

Chicago O'Hare Intl

Sat 8/30

7:00 am-9:25 am

Nonstop4h 25m

Portland

Sun 8/31

7:00 am-1:09 pm

Nonstop4h 09m

$179

ChicagoPortland

MDW - PDX

MDWPDX

Chicago Midway

Sat 8/30

2:10 pm-4:25 pm

Nonstop4h 15m

Portland

Sun 8/31

6:55 am-12:55 pm

Nonstop4h 00m

$179

ChicagoPortland

ORD - PDX

ORDPDX

Chicago O'Hare Intl

Sun 8/31

7:00 am-9:25 am

Nonstop4h 25m

Portland

Tue 9/16

7:00 am-1:11 pm

Nonstop4h 11m

$188

ChicagoPortland

MDW - PDX

MDWPDX

Chicago Midway

Tue 8/26

8:30 pm-10:45 pm

Nonstop4h 15m

Portland

Sun 8/31

6:55 am-12:55 pm

Nonstop4h 00m

$188

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Sat 9/6

9:40 am-12:27 pm

Nonstop3h 47m

Boise Air Term. Gowen Fld

Sat 9/13

1:07 pm-5:45 pm

Nonstop3h 38m

$196

ChicagoPortland

ORD - PDX

ORDPDX

Chicago O'Hare Intl

Wed 10/1

9:40 pm-12:05 am

Nonstop4h 25m

Portland

Wed 10/29

11:58 pm-5:53 am

Nonstop3h 55m

$197

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Tue 9/23

8:45 am-11:31 am

Nonstop3h 46m

Boise Air Term. Gowen Fld

Tue 9/30

12:35 pm-5:08 pm

Nonstop3h 33m

$239

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Wed 9/24

8:45 am-11:31 am

Nonstop3h 46m

Boise Air Term. Gowen Fld

Wed 10/1

2:12 pm-11:15 pm

1 stop8h 03m

$258

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

What is the cheapest month to fly to Oregon?

The month of September is, on average, the cheapest month to fly to Oregon from Illinois, with most prices found around $261. The month of January is another great option to travel to Oregon, with average flight prices from Illinois averaging around $274.

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 $328. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Oregon is Sunday, with ticket prices averaging around $397.

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 $302. 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 $415. 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 O'Hare Intl 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 $332 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 $285 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?

No. A direct flight is the cheapest option for a flight between Illinois to Oregon.

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	$79
Fastest flight time	3h 39m
Direct flights	Every day
Airports in Oregon	2 airports

The best one-way flight to Oregon from Illinois in the past 72 hours is $79. The best round-trip flight deal from Illinois to Oregon found on momondo in the last 72 hours is $172.

The fastest flight from Illinois to Oregon takes 3h 39m

Direct flights go from Illinois to Oregon every day.

There are 2 airports near Oregon: 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?
As of July 2025, there are 8 operators available to choose from 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?
momondo data reveals that the most frequently booked plane model on the route from Illinois to Oregon is Boeing 737-800, representing 19.93% of all bookings. The subsequent popular models are Boeing 737 MAX 9 at 16.92%, Boeing 737-900 at 12.51%, and Airbus A321neo at 10.85%.

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 Airlines	PriceFrom $81	Free Cancellation	Rating 6.3 8,049 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $108	Free Cancellation	Rating 5.9 3,239 reviews	Search Frontier flights
Delta	PriceFrom $123	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $134	Free Cancellation	Rating 7.8 2,611 reviews	Search Hawaiian Airlines flights
Alaska Airlines	PriceFrom $181	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $226	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines flights
American Airlines	PriceFrom $227	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $238	Free Cancellation	Rating 8.0 4,246 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.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Tue 8/5

Tue 8/12

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Oregon

Popular cities in Oregon

Flights to New Yorkfrom $39

Flights to Los Angelesfrom $37

Flights to Miamifrom $58

Flights to Chicagofrom $59

Flights to Orlandofrom $54

Flights to Las Vegasfrom $35

Flights to San Franciscofrom $49

Flights to Washington, D.C.from $49

Flights to Bostonfrom $77

Flights to Atlantafrom $29

Flights to Dallasfrom $55

Flights to Seattlefrom $93

Cheap flights from Illinois to Oregon from $79

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 8/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Illinois to Oregon

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Spirit Airlines flights from Illinois to Oregon

Our best Spirit Airlines deals on Illinois to Oregon flight tickets

Frontier flights from Illinois to Oregon

Our best Frontier deals on Illinois to Oregon flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Illinois to Oregon that are best for you.

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 September is, on average, the cheapest month to fly to Oregon from Illinois, with most prices found around $261. The month of January is another great option to travel to Oregon, with average flight prices from Illinois averaging around $274.

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

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

What is the cheapest Illinois to Oregon flight route?

Fly from Chicago O'Hare Intl to Portland for the best Illinois - Oregon flight prices

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

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?

No. A direct flight is the cheapest option for a flight between Illinois to Oregon.

What is the cheapest airline that flies from Illinois to Oregon?

Spirit Airlines, Southwest, and United Airlines are the most popular carriers operating from Illinois to Oregon

What airlines fly to Oregon?

How many flights depart from Illinois to Oregon on average per day?

As of July 2025, 22 flights take off from Illinois and land in Oregon each day. The most common flight departure time for this route is 8:00PM, with 36% of daily flights taking off in the afternoon.

How many flights depart from Illinois to Oregon on average per week?

As of July 2025, there are 155 flights per week flying from Illinois to Oregon. The most common day of the week flights depart is Thu, with 25% of flights taking off on this day.

How long is the flight from Illinois to Oregon?

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

Fastest flight time

Direct flights

Airports in Oregon

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

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?

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

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

Why use momondo?

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

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

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

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

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Oregon

Popular cities in Oregon

Popular flights according to clicks in the last 7 days on momondo