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

As of February 2026, there are 154 flights per week flying from Illinois to Oregon. The most common day of the week flights depart is Thu, with 16% of flights taking off on this day.

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

Delta, Hawaiian Airlines, 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 38% 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 17m on average. Another popular route from Illinois to Oregon is flying from Moline to Portland, which will take roughly 6h 39m. Keep in mind that layovers or delays could extend your travel time.

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

As of February 2026, 22 flights take off from Illinois and land in Oregon each day. The most common flight departure time for this route is 9:00PM, with 46% of daily flights taking off in the evening.

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 February 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.

$69 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

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Cheap round-trip flights

Enter your travel dates to find the best prices.

8:17 pm - 10:20 am

STL

PDX

16h 03m

1 stop

12:27 pm - 7:21 pm

PDX

STL

28h 54m

1 stop

$139Frontier

sáb., abr. 18 - sáb., abr. 25

8:19 pm - 1:02 pm

STL

PDX

18h 43m

1 stop

11:48 am - 7:32 pm

PDX

STL

29h 44m

1 stop

$147Frontier

lun., abr. 13 - vie., abr. 17

7:12 am - 12:55 pm

ORD

EUG

7h 43m

1 stop

12:35 pm - 11:57 pm

EUG

ORD

9h 22m

1 stop

$177Delta

jue., may. 7 - mar., may. 12

4:30 pm - 10:56 pm

STL

PDX

8h 26m

1 stop

6:00 am - 5:21 pm

PDX

STL

9h 21m

1 stop

$181American Airlines

mar., abr. 14 - mar., abr. 21

9:10 am - 11:46 am

ORD

PDX

4h 36mnonstop

11:59 pm - 10:05 am

PDX

ORD

8h 06m

1 stop

$205United Airlines

mar., abr. 28 - mar., may. 5

6:00 am - 12:22 pm

ORD

BOI

7h 22m

1 stop

8:28 pm - 6:39 am

BOI

ORD

9h 11m

1 stop

$212Hawaiian Airlines

lun., abr. 13 - lun., abr. 20

6:00 am - 12:22 pm

ORD

BOI

7h 22m

1 stop

4:15 pm - 11:59 pm

BOI

ORD

6h 44m

1 stop

$223Alaska Airlines

mié., abr. 15 - mié., abr. 15

6:00 am - 1:52 pm

ORD

BOI

8h 52m

1 stop

2:57 pm - 11:59 pm

BOI

ORD

8h 02m

1 stop

$229Alaska Airlines

mié., abr. 22 - mar., abr. 28

5:33 pm - 11:53 pm

PIA

PDX

8h 20m

1 stop

11:40 pm - 10:10 am

PDX

PIA

8h 30m

1 stop

$309United Airlines

vie., may. 22 - lun., may. 25

6:49 pm - 11:59 pm

PIA

PDX

7h 10m

1 stop

11:30 pm - 9:28 am

PDX

PIA

7h 58m

1 stop

$334American Airlines

mié., jul. 1 - mié., jul. 15

Frontier flights from Illinois to Oregon

Our best Frontier deals on Illinois to Oregon flight tickets

Frontier

Apr 18

STL8:17 pmLambert-St Louis

16h 03m

1 stop

PDX10:20 amPortland

Apr 25

PDX12:27 pmPortland

28h 54m

1 stop

STL7:21 pmLambert-St Louis

$139

Frontier

Apr 13

STL8:19 pmLambert-St Louis

18h 43m

1 stop

PDX1:02 pmPortland

Apr 17

PDX11:48 amPortland

29h 44m

1 stop

STL7:32 pmLambert-St Louis

$147

Frontier

Apr 13

ORD2:29 pmChicago O'Hare Intl

24h 33m

1 stop

PDX1:02 pmPortland

Apr 18

PDX12:27 pmPortland

19h 18m

1 stop

ORD9:45 amChicago O'Hare Intl

$199

Southwest flights from Illinois to Oregon

Our best Southwest deals on Illinois to Oregon flight tickets

Southwest

May 13

STL3:55 pmLambert-St Louis

8h 05m

1 stop

PDX10:00 pmPortland

May 18

PDX11:55 pmPortland

7h 35m

1 stop

STL9:30 amLambert-St Louis

$182

Southwest

May 13

STL3:55 pmLambert-St Louis

8h 05m

1 stop

PDX10:00 pmPortland

May 18

PDX11:55 pmPortland

7h 35m

1 stop

STL9:30 amLambert-St Louis

$196

Southwest

Apr 23

MDW9:50 pmChicago Midway

4h 20m

PDX12:10 amPortland

Apr 28

PDX11:55 pmPortland

3h 55m

MDW5:50 amChicago Midway

$200

Fly from

Fly to

Route

Depart

Return

Price

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

sáb. 4/18

8:17 pm-10:20 am

1 stop16h 03m

Portland

sáb. 4/25

12:27 pm-7:21 pm

1 stop28h 54m

$139

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

lun. 4/13

8:19 pm-1:02 pm

1 stop18h 43m

Portland

vie. 4/17

11:48 am-7:32 pm

1 stop29h 44m

$147

ChicagoEugene

ORD - EUG

ORDEUG

Chicago O'Hare Intl

jue. 5/7

7:12 am-12:55 pm

1 stop7h 43m

Eugene

mar. 5/12

12:35 pm-11:57 pm

1 stop9h 22m

$177

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

mar. 4/14

4:30 pm-10:56 pm

1 stop8h 26m

Portland

mar. 4/21

6:00 am-5:21 pm

1 stop9h 21m

$181

ChicagoPortland

ORD - PDX

ORDPDX

Chicago O'Hare Intl

mar. 4/28

9:10 am-11:46 am

Nonstop4h 36m

Portland

mar. 5/5

11:59 pm-10:05 am

1 stop8h 06m

$205

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

lun. 4/13

6:00 am-12:22 pm

1 stop7h 22m

Boise Air Term. Gowen Fld

lun. 4/20

8:28 pm-6:39 am

1 stop9h 11m

$212

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

mié. 4/15

6:00 am-12:22 pm

1 stop7h 22m

Boise Air Term. Gowen Fld

mié. 4/15

4:15 pm-11:59 pm

1 stop6h 44m

$223

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

mié. 4/22

6:00 am-1:52 pm

1 stop8h 52m

Boise Air Term. Gowen Fld

mar. 4/28

2:57 pm-11:59 pm

1 stop8h 02m

$229

PeoriaPortland

PIA - PDX

PIAPDX

Greater Peoria

vie. 5/22

5:33 pm-11:53 pm

1 stop8h 20m

Portland

lun. 5/25

11:40 pm-10:10 am

1 stop8h 30m

$309

PeoriaPortland

PIA - PDX

PIAPDX

Greater Peoria

mié. 7/1

6:49 pm-11:59 pm

1 stop7h 10m

Portland

mié. 7/15

11:30 pm-9:28 am

1 stop7h 58m

$334

Flights are sorted by cheapest round-trip flights first.

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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 January is, on average, the cheapest month to fly to Oregon from Illinois, with most prices found around $257. The month of May is another great option to travel to Oregon, with average flight prices from Illinois averaging around $276.

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 Monday, with ticket prices averaging around $383.

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 $448. 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 $325 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?

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	$108
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 $108. The best round-trip flight deal from Illinois to Oregon found on momondo in the last 72 hours is $227.

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 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 February 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 32.99% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 18.85%, Boeing 737 MAX 9 at 12.98%, and Boeing 737-900 at 10.97%.

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 $86	Free Cancellation	Rating 6.3 8,493 reviews	Search Spirit Airlines flights
Hawaiian Airlines	PriceFrom $128	Free Cancellation	Rating 7.8 2,837 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $139	Free Cancellation	Rating 7.9 8,244 reviews	Search Delta flights
Frontier	PriceFrom $150	Free Cancellation	Rating 5.7 3,041 reviews	Search Frontier flights
Alaska Airlines	PriceFrom $194	Free Cancellation	Rating 8.0 11,966 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $197	Free Cancellation	Rating 7.4 9,362 reviews	Search United Airlines flights
American Airlines	PriceFrom $204	Free Cancellation	Rating 7.1 11,367 reviews	Search American Airlines flights
Southwest	PriceFrom $227	Free Cancellation	Rating 8.0 4,303 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.

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Popular cities in Oregon

Flights to New Yorkfrom $56

Flights to Los Angelesfrom $54

Flights to Miamifrom $49

Flights to Orlandofrom $56

Flights to Chicagofrom $53

Flights to San Franciscofrom $50

Flights to Las Vegasfrom $53

Flights to Washington, D.C.from $56

Flights to Bostonfrom $75

Flights to Atlantafrom $49

Flights to Dallasfrom $54

Flights to Seattlefrom $48

Cheap flights from Illinois to Oregon from $69

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 4/27. 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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Our best Southwest 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.

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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 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

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

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According to popular flight searches on momondo this year

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