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$54+ Cheap flights from Portland (PDX) to Illinois

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — ORD
Dec 7 — Dec 141
Sat 12/7
Sat 12/14
1 adult, Economy
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Cheap flight deals from Portland to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 2, 2024.

Find flight deals from Portland to Illinois

Cheapest flights from Portland to Illinois
Explore the most affordable flight options available from Portland to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 2, 2024.

This CheapOair deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/107:35 amPDX - STL
1 stop22h 38mFrontier
Tue 12/179:46 pmSTL - PDX
1 stop19h 58mFrontier
Deal found 12/2$214
This FlightHub deal was found by Cheapflights users on 12/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/307:19 pmPDX - ORD
1 stop8h 11mSpirit Airlines
Sat 1/49:54 pmORD - PDX
1 stop27h 40mSpirit Airlines
Deal found 12/1$217
This eDestinos deal was found by Cheapflights users on 12/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/309:14 pmPDX - MDW
3 stops24h 06mMultiple Airlines
Mon 1/61:24 pmMDW - PDX
2 stops36h 10mMultiple Airlines
Deal found 12/1$223
This Kiwi.com deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/287:19 pmPDX - ORD
1 stop8h 11mMultiple Airlines
Thu 1/28:34 pmORD - PDX
1 stop23h 45mMultiple Airlines
Deal found 12/2$227
This Trip.com deal was found by Cheapflights users on 11/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/301:05 pmPDX - MDW
1 stop6h 04mFrontier
Mon 1/610:04 pmMDW - PDX
1 stop28h 11mFrontier
Deal found 11/30$234
This FlightHub deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/612:03 pmPDX - ORD
1 stop10h 32mFrontier
Mon 12/168:25 pmORD - PDX
1 stop18h 09mFrontier
Deal found 12/2$237
This Alaska Airlines deal was found by Cheapflights users on 12/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/3011:29 pmPDX - ORD
Nonstop4h 01mAlaska Airlines
Tue 1/73:03 pmORD - PDX
1 stop7h 43mAlaska Airlines
Deal found 12/1$287
This American Airlines deal was found by Cheapflights users on 12/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/3012:59 amPDX - STL
1 stop7h 46mAmerican Airlines
Tue 1/77:00 amSTL - PDX
1 stop8h 16mAmerican Airlines
Deal found 12/1$293
This United Airlines deal was found by Cheapflights users on 12/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2911:55 pmPDX - ORD
Nonstop4h 01mUnited Airlines
Sun 1/57:40 pmORD - PDX
Nonstop4h 45mUnited Airlines
Deal found 12/1$306
This United Airlines deal was found by Cheapflights users on 12/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/311:30 pmPDX - STL
1 stop8h 29mUnited Airlines
Tue 1/71:45 pmSTL - PDX
1 stop6h 20mUnited Airlines
Deal found 12/1$316
This American Airlines deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2612:59 amPDX - ORD
1 stop8h 31mAmerican Airlines
Sun 1/56:35 pmORD - PDX
1 stop8h 20mAmerican Airlines
Deal found 12/2$356
This Delta deal was found by Cheapflights users on 12/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/315:20 amPDX - ORD
1 stop5h 55mDelta
Tue 1/76:45 amORD - PDX
2 stops11h 48mDelta
Deal found 12/1$361

Find flights from Portland to Illinois within your budget

Customize your flight search to find flights from Portland to Illinois 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, Cheapflights users made 2,650,959 searches. Data last updated December 2, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Wed 2/5

9:00 am-6:09 pm

1 stop7h 09m

Lambert-St Louis

Tue 2/11

1:45 pm-8:37 pm

2 stops8h 52m

$213

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Thu 1/9

5:31 am-4:23 pm

1 stop8h 52m

Lambert-St Louis

Sat 1/18

2:27 pm-8:45 pm

1 stop8h 18m

$214

PortlandChicago

PDX - ORD

PDXORD

Portland

Wed 1/8

7:00 am-1:07 pm

Nonstop4h 07m

Chicago O'Hare Intl

Thu 1/9

3:35 pm-6:18 pm

Nonstop4h 43m

$217

PortlandChicago

PDX - ORD

PDXORD

Portland

Wed 1/8

5:00 am-10:01 am

2 stops27h 01m

Chicago O'Hare Intl

Thu 1/9

10:47 pm-9:21 am

1 stop12h 34m

$218

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Thu 12/12

12:03 pm-8:13 am

1 stop18h 10m

Lambert-St Louis

Sun 12/15

8:34 pm-9:47 am

1 stop15h 13m

$218

PortlandChicago

PDX - MDW

PDXMDW

Portland

Mon 12/30

9:14 pm-11:20 pm

3 stops24h 06m

Chicago Midway

Mon 1/6

1:24 pm-11:34 pm

2 stops36h 10m

$223

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Thu 1/9

1:36 pm-11:14 pm

2 stops7h 38m

Lambert-St Louis

Sat 1/18

5:00 pm-10:52 pm

1 stop7h 52m

$226

PortlandChicago

PDX - ORD

PDXORD

Portland

Sat 12/28

7:19 pm-5:30 am

1 stop8h 11m

Chicago O'Hare Intl

Thu 1/2

8:34 pm-6:19 pm

1 stop23h 45m

$227

PortlandChicago

PDX - MDW

PDXMDW

Portland

Wed 1/1

12:45 pm-9:32 pm

1 stop6h 47m

Chicago Midway

Mon 1/6

10:04 pm-12:15 am

1 stop28h 11m

$228

PortlandChicago

PDX - ORD

PDXORD

Portland

Wed 1/1

4:45 pm-10:48 pm

Nonstop4h 03m

Chicago O'Hare Intl

Mon 1/6

8:00 pm-10:45 pm

Nonstop4h 45m

$233

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/1

Showing 1-10 of 57 results
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Best time to book a flight from Portland to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Portland to Illinois

Get recent, data-driven insights about flights from Portland to Illinois including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Portland to Illinois?

Currently, September is the cheapest month in which you can book a flight from Portland to Illinois (average of $232). Flying from Portland to Illinois in June is currently the most expensive (average of $308). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PDX to IL?

Find hourly flight availability from Portland to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 2, 2024.

When flying from Portland to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated December 2, 2024.
Read reviews from past customers who have flown Frontier, Alaska Airlines and Spirit Airlines from Portland to Illinois. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,951 reviews

Overall

8.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.2

Entertainment

7.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Southwest
8.1
Very good
4,951 reviews
Southwest
8.1
Very good
4,951 reviews

Overall

8.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.2

Entertainment

7.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Alaska Airlines
8.0
Very good
9,508 reviews
Southwest
8.1
Very good
4,951 reviews

Overall

8.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.2

Entertainment

7.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Delta
8.0
Very good
8,698 reviews
Southwest
8.1
Very good
4,951 reviews

Overall

8.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.2

Entertainment

7.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

United Airlines
7.4
Good
9,141 reviews
Southwest
8.1
Very good
4,951 reviews

Overall

8.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.2

Entertainment

7.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Allegiant Air
7.4
Good
842 reviews
Southwest
8.1
Very good
4,951 reviews

Overall

8.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.2

Entertainment

7.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Related info for your journey

Find useful and relevant information for your journey from Portland to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Portland to Illinois?

    Located just 6.0 mi from the city center, Portland (PDX) is the airport most travelers will use when flying to Illinois from Portland.

  • What are the cheapest airlines to fly from Portland to Illinois one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $54. Delta flights start at $99 while deals on Spirit Airlines start at $107 one-way.

  • What are the most popular routes from Portland to Illinois?

    When deciding which route to take from Portland to Illinois consider Portland - Chicago O'Hare Intl, Portland - Chicago Midway or Portland - Lambert-St Louis as they are the most popular.

  • What are the most reliable airlines from Portland to Illinois?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Portland to Illinois on time: Iberia (96%), Lufthansa (94%), United Airlines (94%).

  • What are the cheapest flights from Portland to Illinois?

    On average you can expect to pay $1,016 for a flight from Portland to Illinois. The cheapest flight overall is $133 while the most popular route, (Portland - Chicago O'Hare Intl) is currently priced at $143.

  • Can I find deals for flights from Portland to Illinois that include hotel bookings?

    Yes. In addition to deals on Portland to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Illinois.

  • Can I find deals for business class flights from Portland to Illinois?

    Yes. Cheapflights offers flight deals from Portland to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland to Illinois?

    Currently, September is the cheapest month in which you can book a flight from Portland to Illinois (average of $232). Flying from Portland to Illinois in June is currently the most expensive (average of $308). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for Portland to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Portland to Illinois

Discover the top 7 airlines that operate flights from Portland to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,650,959 searches. Data last updated December 2, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$82Average$136FlexibilityNo cancel feeOn-time65%
FrontierCheapest$108Average$241FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$178Average$345FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$188Average$504FlexibilityNo cancel feeOn-time71%
DeltaCheapest$216Average$401FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$218Average$483FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$233Average$520FlexibilityNo cancel feeOn-time63%
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