Find flights
Deals
When to book
FAQs & Tips
Airlines

Find cheap flights from Portland to Illinois from $70

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Illinois departing on 5/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Mi 5/29
Mi 6/5

Search hundreds of travel sites at once for deals on flights to Illinois

In the last 7 days travelers have searched 43,219,010 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Best Illinois Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Chicago
Chicago1 stop$169
Moline
Moline1 stop$373
Peoria
Peoria1 stop$348
Bloomington
Bloomington1 stop$234
Champaign
Champaign1 stop$498
Springfield
Springfield2 stops$459
St. Louis
St. Louis1 stop$121

Good to know

Low season

February

High season

June

Cheapest flight

$70
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly with an average 11% increase in price.
Flight from Portland to St. Louis

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Portland to Illinois?

    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 Portland to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Illinois from Portland 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 Portland to Illinois?

    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 Illinois with an airline and back to Portland with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Illinois?

    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 Illinois from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Portland to the following destinations at these prices or less: Chicago $198 one-way - $388 round-trip
  • Morning departure is around 13% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Portland to Illinois

 
Need help choosing which airline to fly with from Portland to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10932 reviews
8.2boarding
7.9comfort
8.0entertainment
7.4food
8.6crew
Airline reviews

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

8.0 ExcellentCynthia, Apr 2024TYS - ATL
Read more about Delta reviews

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

The pilots were good. Disappointing when planes don't have electrical ports

I liked the piloting of the aircraft. Very disappointed about lack of electrical ports. Also, although a short flight. there was enough time to hand out snacks to comfort + seats as was done for first class.

I had a wonderful experience flying with delta. The gentleman taking care of us on our flight was so nice, accommodating, and attentive. He always was smiling and giving pins to the kids which made me smile. The flight was quick too and without turbulence. Thank you for the great flying experience.

Delta is one of the best airlines I have flown

Made the Atlanta to Pittsburgh trip many times, with Delta no issues

I always fly with Delta. My friends tell me their horror stories of flying with other airlines. I just smile and say, “You should fly Delta”

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

Horrible. This was not first class. This was a connecting flight whi h was late. My original flight never came. I hated the fact that delta gave me a connecting flight from New York to Orlando Florida. No meals and the television screens were not working. There wasn't even any power to charge your phones. This is NOT FIRST CLASS DELTA!!! Do better next time!

This flight was ridiculous. I had to have a connecting flight from New York to orlando Florida??? The flight left late and because it was a short flight there was no first class amenities. I had one alcohol drink. The flight crew was fine, but it sure did not feel like first class. Delta to me dropped the ball by giving me a connecting flight. By the time we got to Raleigh we would have missed the next flight. Lucky for me the flight never came so now I was stuck waiting for a later flight that came in late also.

Great. Loved that there was WiFi on flight to keep in touch and excellent service of beverages and snacks.

Business class is great. New airplane, very comfortable, better than some of the major airlines I am used to

Terrible. Flight was cancelled due to the weather in the east and sout east(florida). Did not get any compesation of any kind. According to them, it was not under their control so I lost all the money paid for the 2 fairs from Raleigh, NC to Orlando, Fl.

great flight. Pilot was communicative, flight attendants were excellent. Really nice experience except my tv didn’t work.

Overall, the flight was better than the flight I took to go to Florida, which had a bunch of problems. The crew is really nice and the plane was new so it had a small problem when we were on the runway, but the flight itself was great. They even made some time back up, which is always a good thing.

There were multiple delays but JetBlue tried to make the boarding and departure process as quick and efficient as possible. The crew was as detached from reality as could be, meaning: not very friendly and just doing things by the numbers.

I had back trouble prior to my flight and everyone was great about helping me.

40 minute delay before take off after boarding flight. Bright lights throughout night flight due Issues with light panels. In flight Entertainment nonfunctional

Everything was good except for deplaning in NY. Took way too long!!

Jet Blue keeps getting iit wrong. 4 hour mechanical delay followed by terrible boarding experience. This is my third horrific jet blue flight in 2024. I am going to try to avoid this loser in the sky

I was told we'd have a hot breakfast option in first class, so I chose not get a hot breakfast. It was a very strange meal, but the fresh fruit was very good quality. Service was excellent from ORD to ELP. No service from MBS to ORD, not even water. However, when flying American from FNT to ORD, which is a shorter flight, they at least pass out snacks and offer water.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

The flight was delayed instead of leaving at 11 it left at 12.20

United WiFi is consistently unusable (it can take 10 mins to load a single web page). If you need Wifi to do work, be prepared to lose half a day of productivity.

Good movies, iffy pay WiFi, food ok- on time though and that was great!

Awful…flight was delayed more than 12hrs, missed all connections to Fort Wayne, IN, had to get flight to another city 2 hours from my destination, flight was again delayed by 40 mins because they did not have enough fuel, again missed a connection, finally arrived in Indiana at 11pm…but before my 2 hour drive home, ay, no Five That Our Luggage Never Made On The plane and Still In Chicago

Boarding was friendly and quick. While the plane model was older with no live tv, the entertainment was full of movies and tv shows. All food was available. Pilots were very communicative with status of the flight. Flight landed on time.

Flight was delayed by over an hour and gate checked bags took 15 minutes to be delivered to the jet bridge.

The Palm Springs to Chicago O’Hare was on Time and Palm Springs airport is easier navigate. As our connection was only an approximately 50 minutes, we asked staff for insights for the Chicago airport in terms of transferring into the other terminal from which our flight left, and they were unhelpful. However, the United App was very helpful in terms of notifications and even providing directions. The Chicago to Detroit flight was significantly delayed which we all know does happen. However, there were very few updates or notifications as to why this was happening when we would actually arrive. It took nearly 30 minutes for bags to make it to baggage claim. We arrived nearly 1 hour late on a 40 minute flight.

This flight is frequently delayed. The connections seemingly are more frequently delayed. I’ve missed connections as a result twice on the same route to charlotte then Charleston. Final destination arrival has been the next day, twice in a row. No pilots, no crew. Too many excuses. Unfortunately, my days with American are over.

Entertainment was okay not because anything was wrong but it is a short flight so having no wifi is annoying but understandable. Crew was outstanding as usual

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

Flight boarded without pilots. Sat on plane for 3 hrs. after over an hour late boarding. Plane never took off. Had to deplane near midnight. Line for rebooking was 3 hours + long. I had to leave.

Flight was fine. It took an unusually long time to have baggage delivered to the carousel in ORD.

Average - flew with Jet Blue internal and it was far more comfortable and better food and entertainment. Notable difference

The flight got canceled due to mechanical issues, and he to be rebooked and missed my appointments for that day

The flight was scheduled to depart DCA at 12:30 pm but was delayed twice on the ground so that we were finally scheduled to depart at around 4:00 pm. Once we boarded, it was announced that takeoff would be delayed again to fix a hydraulic problem which delayed our eventual takeoff until around 5:00 pm. Once we departed, it was a smooth flight back to ORD. We did not get any explanation about what caused the original significant delay. In my experience, this happens frequently with AA.

The only problem experienced was a ground stop in Chicago due to weather. But the crew handled everything professionally. They prioritized rebooking those passengers who had connecting flights and then deplaning the other passengers. When the hold was lifted, they efficiently re-boarded all the passengers so that we could depart before our departure limit expired.

Our second leg to Jackson WY was unable to land due to weather. We were flown back to Dallas after stopping in SLC. We were given hotel rooms and vouchers. We were told that we would be back on the same plane in the morning. Instead we were given a different flight with different seats. Not a good experience. No one knew what was going on.

Ontime boarding. Almost 1 hour take off delay. We could have boarded slightly later since the pilots were in traffic

Flight was delayed, I had to put my luggage all the way in the back! They served only a beverage no snack on the way in Air Canada, definitely not a good first impression.

Fresh fuit or veg snacks would be so great, but there are two good restaurants in Denver airport. Try Etais UDIS or Freshens DIA for nutritious delicious pita sandwiches/ donairs and crepes in Freshens.

Crowded plane but it flew on time and had friendly staff

This was the first AC flight in a long time that we experienced no delays or frustrations. The gate attendant was extremely polite and accommodating to my husband who has Parkinson’s disease which made boarding extremely stress free. Flight departed ON TIME and was a smooth ride. If only all my AC experiences could be like this.

The Air Canada agent was very helpful helping with my luggage and cat carrier when I went there instead of United.

United force you to download their App to do the check-in.

It was fine. The seating was tight. My husband is 6' 2", so we were glad to get seats with no one in front of him. I was glad that the plane wasn't packed so I could spread out.

There is no food or entertainment on these short flights. Again the wheelchair situation in Denver is nasty. They are short staffed due to cut backs and layoffs and this impacts on travel comfort and ease.

There was no food or entertainment on this flight. Great flight crew though

Book cheap flights from Portland to Illinois

Recent round-trip flight deals

5/14Di
1 stop
27h 26mPDX-STL
5/21Di
2 stops
31h 08mSTL-PDX
$121
5/13Mo
1 stopFrontier
12h 51mPDX-STL
5/21Di
2 stopsFrontier
25h 57mSTL-PDX
$124
5/19So
nonstopSpirit Airlines
3h 50mPDX-ORD
5/27Mo
nonstopSpirit Airlines
4h 30mORD-PDX
$172
6/17Mo
nonstopSpirit Airlines
4h 07mPDX-ORD
6/25Di
1 stopSpirit Airlines
14h 52mORD-PDX
$175
7/10Mi
nonstopAmerican Airlines
3h 55mPDX-ORD
7/16Di
nonstopAmerican Airlines
4h 25mORD-PDX
$179
7/13Sa
nonstopAmerican Airlines
3h 55mPDX-ORD
7/17Mi
nonstopAmerican Airlines
4h 25mORD-PDX
$188
5/30Do
nonstopUnited Airlines
3h 58mPDX-ORD
6/4Di
nonstopUnited Airlines
4h 28mORD-PDX
$197
5/26So
1 stopDelta
6h 35mPDX-ORD
5/29Mi
1 stopDelta
6h 32mORD-PDX
$216
6/7Fr
1 stopDelta
8h 10mPDX-ORD
6/10Mo
1 stopDelta
6h 41mORD-PDX
$238
5/30Do
nonstopUnited Airlines
3h 58mPDX-ORD
6/4Di
1 stopUnited Airlines
6h 21mORD-PDX
$280

Search by stops

Search by airline

Search by price

Recent one-way flight deals

5/11Sa
1 stopFrontier
21h 58mPDX-STL
$70
5/10Fr
1 stopFrontier
6h 58mPDX-STL
$80
5/7Di
1 stopSpirit Airlines
22h 58mPDX-ORD
$96
5/28Di
nonstopAmerican Airlines
4h 06mPDX-ORD
$99
6/4Di
2 stopsSpirit Airlines
18h 44mPDX-ORD
$104
5/28Di
1 stopDelta
7h 51mPDX-ORD
$108
5/30Do
1 stopDelta
6h 07mPDX-MDW
$108
5/20Mo
1 stopAmerican Airlines
10h 31mPDX-ORD
$120
9/17Di
1 stopUnited Airlines
8h 30mPDX-MLI
$134
6/10Mo
nonstopUnited Airlines
3h 58mPDX-ORD
$135

Search by stops

Search by airline

Search by price

Last minute flights from Portland to Illinois

Last minute flight, train and bus deals

5/1Mi
multi-stop
11h 36mPDX-ORD
5/8Mi
nonstop
4h 30mORD-PDX
$178
5/4Sa
multi-stopFrontier
21h 58mPDX-STL
5/8Mi
multi-stopFrontier
15h 19mSTL-PDX
$200
5/4Sa
multi-stopAmerican Airlines
7h 09mPDX-STL
5/10Fr
multi-stopAmerican Airlines
7h 38mSTL-PDX
$276
5/3Fr
multi-stopDelta
8h 09mPDX-STL
5/10Fr
multi-stopDelta
7h 13mSTL-PDX
$303
5/1Mi
multi-stopAmerican Airlines
7h 59mPDX-STL
7/4Do
multi-stopAmerican Airlines
6h 52mSTL-PDX
$340
5/1Mi
multi-stopDelta
5h 12mPDX-STL
7/4Do
multi-stopDelta
7h 52mSTL-PDX
$357
5/2Do
multi-stopSpirit Airlines
9h 25mPDX-ORD
5/7Di
multi-stopSpirit Airlines
30h 02mORD-PDX
$369
5/1Mi
multi-stopSpirit Airlines
16h 20mPDX-ORD
5/8Mi
multi-stopSpirit Airlines
19h 07mORD-PDX
$372
5/4Sa
multi-stopUnited Airlines
13h 15mPDX-STL
5/10Fr
multi-stopUnited Airlines
7h 48mSTL-PDX
$482
5/1Mi
multi-stopUnited Airlines
7h 31mPDX-STL
7/4Do
multi-stopUnited Airlines
30h 06mSTL-PDX
$640

Search by stops

Search by airline

Search by price

Portland - Illinois Flights

Departure:

Portland (PDX)United States

Return flight deals:

Illinois - Portland

Cabin classes:

$585
$578
$852
$203