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

As of June 2026, 25 flights take off from Illinois and land in Oregon each day. The most common flight departure time for this route is 7:00PM, with 47% of daily flights taking off in the evening.

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

As of June 2026, there are 179 flights per week flying from Illinois to Oregon. The most common day of the week flights depart is Tue, with 21% of flights taking off on this day.

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

Southwest, Delta, and Alaska Airlines are the most popular carriers operating from Illinois to Oregon

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 39% 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 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 21m. 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 June 2026, 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.

$106 Cheap Flights from Illinois to Oregon in 2026

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Find the cheapest flights from Illinois to Oregon

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:00 pm - 10:20 pm

STL

PDX

7h 20m

1 stop

10:45 pm - 10:05 am

PDX

STL

9h 20m

1 stop

$271Southwest

ons, sep 2 - tis, sep 8

12:20 pm - 7:50 pm

STL

PDX

9h 30m

2 stops

10:45 pm - 10:05 am

PDX

STL

9h 20m

1 stop

$276Southwest

ons, sep 2 - tis, sep 8

4:40 pm - 9:05 pm

STL

PDX

6h 25m

1 stop

1:00 pm - 10:30 pm

PDX

STL

7h 30m

1 stop

$277United Airlines

lör, sep 12 - tors, sep 17

4:54 pm - 11:59 pm

STL

PDX

9h 05m

1 stop

6:00 am - 2:44 pm

PDX

STL

6h 44m

1 stop

$281American Airlines

tis, sep 8 - tis, sep 15

6:59 pm - 10:41 pm

STL

PDX

5h 42m

1 stop

5:10 pm - 12:34 am

PDX

STL

5h 24m

1 stop

$291Delta

fre, sep 11 - fre, sep 18

8:53 am - 11:37 am

ORD

EUG

4h 44mnonstop

2:10 pm - 8:20 pm

EUG

ORD

4h 10mnonstop

$299United Airlines

tors, jun 25 - tors, jul 2

2:10 pm - 10:09 pm

STL

PDX

9h 59m

1 stop

12:30 am - 8:37 am

PDX

STL

6h 07m

1 stop

$302Delta

mån, aug 10 - ons, aug 12

5:42 am - 10:51 am

STL

PDX

7h 09m

1 stop

11:59 pm - 9:24 am

PDX

STL

7h 25m

1 stop

$305American Airlines

mån, aug 31 - sön, sep 6

7:20 am - 9:45 am

ORD

PDX

4h 25mnonstop

10:59 pm - 5:00 am

PDX

ORD

4h 01mnonstop

$314Alaska Airlines

ons, jul 22 - ons, jul 22

7:20 am - 9:45 am

ORD

PDX

4h 25mnonstop

10:59 pm - 5:00 am

PDX

ORD

4h 01mnonstop

$315Alaska Airlines

lör, aug 8 - lör, aug 15

Alaska Airlines flights from Illinois to Oregon

Our best Alaska Airlines deals on Illinois to Oregon flight tickets

Alaska Airlines

Jul 22

ORD7:20 amChicago O'Hare Intl

4h 25m

PDX9:45 amPortland

Jul 22

PDX10:59 pmPortland

4h 01m

ORD5:00 amChicago O'Hare Intl

$314

Alaska Airlines

Aug 8

ORD7:20 amChicago O'Hare Intl

4h 25m

PDX9:45 amPortland

Aug 15

PDX10:59 pmPortland

4h 01m

ORD5:00 amChicago O'Hare Intl

$315

Alaska Airlines

Jun 23

ORD6:00 amChicago O'Hare Intl

9h 01m

1 stop

EUG1:01 pmEugene

Jun 27

EUG4:00 pmEugene

11h 00m

1 stop

ORD5:00 amChicago O'Hare Intl

$319

American Airlines flights from Illinois to Oregon

Our best American Airlines deals on Illinois to Oregon flight tickets

American Airlines

Sep 8

STL4:54 pmLambert-St Louis

9h 05m

1 stop

PDX11:59 pmPortland

Sep 15

PDX6:00 amPortland

6h 44m

1 stop

STL2:44 pmLambert-St Louis

$281

American Airlines

Aug 31

STL5:42 amLambert-St Louis

7h 09m

1 stop

PDX10:51 amPortland

Sep 6

PDX11:59 pmPortland

7h 25m

1 stop

STL9:24 amLambert-St Louis

$305

American Airlines

Aug 20

STL8:00 amLambert-St Louis

6h 24m

1 stop

BOI1:24 pmBoise Air Term. Gowen Fld

Aug 25

BOI1:55 pmBoise Air Term. Gowen Fld

9h 19m

2 stops

STL12:14 amLambert-St Louis

$308

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

ons 9/2

5:00 pm-10:20 pm

1 stop7h 20m

Portland

tis 9/8

10:45 pm-10:05 am

1 stop9h 20m

$271

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

ons 9/2

12:20 pm-7:50 pm

2 stops9h 30m

Portland

tis 9/8

10:45 pm-10:05 am

1 stop9h 20m

$276

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

lör 9/12

4:40 pm-9:05 pm

1 stop6h 25m

Portland

tors 9/17

1:00 pm-10:30 pm

1 stop7h 30m

$277

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

tis 9/8

4:54 pm-11:59 pm

1 stop9h 05m

Portland

tis 9/15

6:00 am-2:44 pm

1 stop6h 44m

$281

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

fre 9/11

6:59 pm-10:41 pm

1 stop5h 42m

Portland

fre 9/18

5:10 pm-12:34 am

1 stop5h 24m

$291

ChicagoEugene

ORD - EUG

ORDEUG

Chicago O'Hare Intl

tors 6/25

8:53 am-11:37 am

Nonstop4h 44m

Eugene

tors 7/2

2:10 pm-8:20 pm

Nonstop4h 10m

$299

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

mån 8/10

2:10 pm-10:09 pm

1 stop9h 59m

Portland

ons 8/12

12:30 am-8:37 am

1 stop6h 07m

$302

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

mån 8/31

5:42 am-10:51 am

1 stop7h 09m

Portland

sön 9/6

11:59 pm-9:24 am

1 stop7h 25m

$305

Quickest round-trip

ChicagoPortland

ORD - PDX

ORDPDX

Chicago O'Hare Intl

ons 7/22

7:20 am-9:45 am

Nonstop4h 25m

Portland

ons 7/22

10:59 pm-5:00 am

Nonstop4h 01m

$314

ChicagoPortland

ORD - PDX

ORDPDX

Chicago O'Hare Intl

lör 8/8

7:20 am-9:45 am

Nonstop4h 25m

Portland

lör 8/15

10:59 pm-5:00 am

Nonstop4h 01m

$315

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 May is, on average, the cheapest month to fly to Oregon from Illinois, with most prices found around $115. The month of January is another great option to travel to Oregon, with average flight prices from Illinois averaging around $123.

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 Tuesday. momondo users have found tickets for Tuesday departures for as low as $331. 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 $404.

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 $329. 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 $467. 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 from Illinois 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 $328 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 $256 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 20% 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	$163
Fastest flight time	3h 30m
Direct flights	Every day
Airports in Oregon	64 airports

The best one-way flight to Oregon from Illinois in the past 72 hours is $163. The best round-trip flight deal from Illinois to Oregon found on momondo in the last 72 hours is $315.

The fastest flight from Illinois to Oregon takes 3h 30m

Direct flights go from Illinois to Oregon every day.

There are 64 airports in Oregon. From Illinois there are direct flights to Boise Air Term. Gowen Fld (BOI).

Search flight deals

Frequently asked questions about flying from Illinois to Oregon

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 June 2026, 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 32.98% of all bookings. The subsequent popular models are Airbus A321-100/200 at 14.58%, Airbus A321neo at 12.02%, and Boeing 737 MAX 8 at 10.93%.

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
Hawaiian Airlines	PriceFrom $119	Free Cancellation	Rating 7.8 2,832 reviews	Search Hawaiian Airlines flights
Frontier	PriceFrom $150	Free Cancellation	Rating 5.6 2,921 reviews	Search Frontier flights
Delta	PriceFrom $159	Free Cancellation	Rating 7.9 8,398 reviews	Search Delta flights
JetBlue	PriceFrom $191	Free Cancellation	Rating 7.1 2,981 reviews	Search JetBlue flights
Alaska Airlines	PriceFrom $194	Free Cancellation	Rating 7.9 12,459 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $200	Free Cancellation	Rating 7.1 11,641 reviews	Search American Airlines flights
United Airlines	PriceFrom $201	Free Cancellation	Rating 7.4 9,775 reviews	Search United Airlines flights
Southwest	PriceFrom $227	Free Cancellation	Rating 8.0 4,256 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

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Popular cities in Oregon

Flights to New Yorkfrom $64

Flights to Los Angelesfrom $77

Flights to Orlandofrom $58

Flights to Miamifrom $78

Flights to Chicagofrom $68

Flights to San Franciscofrom $66

Flights to Las Vegasfrom $66

Flights to Washington, D.C.from $50

Flights to Bostonfrom $66

Flights to Atlantafrom $81

Flights to Fort Lauderdalefrom $58

Flights to Dallasfrom $56

Cheap flights from Illinois to Oregon from $106

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 8/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Alaska Airlines flights from Illinois to Oregon

Our best Alaska Airlines deals on Illinois to Oregon flight tickets

American Airlines flights from Illinois to Oregon

Our best American Airlines deals on Illinois to Oregon flight tickets

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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

What is the cheapest month to fly to Oregon?

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?

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

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

Can stopping save me money on Illinois to Oregon flights?

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

What airlines fly to Oregon?

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

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

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

Frequently asked questions about flying 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?

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

Illinois flight routes

According to popular flight searches on momondo this year

Oregon flight routes

According to popular flight searches on momondo this year

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