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Cheap flights from Porto (OPO) to Illinois from $401

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 5/31. 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.
OPO — ORD
may. 21 — may. 281
From?
To?
mar. 5/21
mar. 5/28
1 adult, Economy
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What is the cheapest month to fly from Porto to Illinois?

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, September can be a great choice for travel to Illinois. Flights to Illinois from Porto in September are about $844 on average during September, but can be found for as low as $645.

When is the cheapest time to fly from Porto to Illinois (OPO - IL)?

When flying from Porto 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.

Cheap United Airlines flights from Porto to Illinois

Explore cheap flight options specifically provided by United Airlines for the route between Porto and Illinois. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated mayo 16, 2024.
Take a look at some of the lowest-priced United Airlines flights heading from Porto to Illinois. Make sure to check back often as deals are often changing.
jue. 5/2312:35 pmOPO - ORD
1 stop13h 35mUnited Airlines
mié. 6/59:30 amORD - OPO
2 stops15h 25mUnited Airlines
Deal found 5/15$733
jue. 6/66:00 amOPO - ORD
1 stop15h 00mUnited Airlines
jue. 6/201:12 pmORD - OPO
1 stop11h 43mUnited Airlines
Deal found 5/15$766
jue. 6/69:00 amOPO - ORD
2 stops15h 52mUnited Airlines
jue. 6/201:12 pmORD - OPO
1 stop11h 43mUnited Airlines
Deal found 5/15$774

Cheap SWISS flights from Porto to Illinois

Explore cheap flight options specifically provided by SWISS for the route between Porto and Illinois. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated mayo 16, 2024.
Have a look at some of the cheapest available SWISS flights departing from Porto and landing in Illinois. Deals frequently update to provide users with more options.
jue. 6/67:20 pmOPO - ORD
2 stops22h 40mSWISS
jue. 6/207:15 pmORD - OPO
2 stops36h 30mSWISS
Deal found 5/15$870
jue. 5/237:20 pmOPO - ORD
2 stops22h 40mSWISS
mié. 6/52:20 pmORD - OPO
2 stops17h 25mSWISS
Deal found 5/15$884

Cheap Porto to Illinois flights in May & June 2024

Find cheap flight options from Porto to Illinois specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Prices were last updated on mayo 16, 2024.
Scroll through some of the best deals on flights from Porto to Illinois in 2024. Check back soon for alternative fares.
jue. 5/2312:35 pmOPO - ORD
1 stop13h 35mUnited Airlines
mié. 6/59:30 amORD - OPO
2 stops15h 25mUnited Airlines
Deal found 5/15$733
jue. 6/66:00 amOPO - ORD
1 stop15h 00mUnited Airlines
jue. 6/201:12 pmORD - OPO
1 stop11h 43mUnited Airlines
Deal found 5/15$766
jue. 6/69:00 amOPO - ORD
2 stops15h 52mUnited Airlines
jue. 6/201:12 pmORD - OPO
1 stop11h 43mUnited Airlines
Deal found 5/15$774
jue. 6/67:20 pmOPO - ORD
2 stops22h 40mSWISS
jue. 6/207:15 pmORD - OPO
2 stops36h 30mSWISS
Deal found 5/15$870
jue. 5/237:20 pmOPO - ORD
2 stops22h 40mSWISS
mié. 6/52:20 pmORD - OPO
2 stops17h 25mSWISS
Deal found 5/15$884

Porto to Illinois 2024 flight deals

Discover exclusive flight deals for travel between Porto and Illinois in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated mayo 16, 2024.
Scroll through some of the best deals on flights from Porto to Illinois in 2024. Check back soon for alternative fares.
jue. 5/2312:35 pmOPO - ORD
1 stop13h 35mUnited Airlines
mié. 6/59:30 amORD - OPO
2 stops15h 25mUnited Airlines
Deal found 5/15$733
jue. 6/66:00 amOPO - ORD
1 stop15h 00mUnited Airlines
jue. 6/201:12 pmORD - OPO
1 stop11h 43mUnited Airlines
Deal found 5/15$766
jue. 6/69:00 amOPO - ORD
2 stops15h 52mUnited Airlines
jue. 6/201:12 pmORD - OPO
1 stop11h 43mUnited Airlines
Deal found 5/15$774
jue. 6/67:20 pmOPO - ORD
2 stops22h 40mSWISS
jue. 6/207:15 pmORD - OPO
2 stops36h 30mSWISS
Deal found 5/15$870
jue. 5/237:20 pmOPO - ORD
2 stops22h 40mSWISS
mié. 6/52:20 pmORD - OPO
2 stops17h 25mSWISS
Deal found 5/15$884
jue. 7/114:50 pmOPO - ORD
1 stop22h 50mTurkish Airlines
sáb. 8/108:30 pmORD - OPO
1 stop32h 40mTurkish Airlines
Deal found 5/16$1,046
jue. 7/115:00 amOPO - ORD
1 stop15h 15mKLM
sáb. 8/101:35 pmORD - OPO
2 stops15h 05mKLM
Deal found 5/16$1,067
jue. 7/119:15 amOPO - ORD
2 stops18h 24mDelta
sáb. 8/105:30 pmORD - OPO
2 stops16h 00mDelta
Deal found 5/16$1,097
jue. 7/114:25 pmOPO - ORD
3 stops47h 26mMultiple Airlines
sáb. 8/104:05 pmORD - OPO
2 stops37h 15mMultiple Airlines
Deal found 5/16$16,778

Porto to Illinois flights leaving soon

Find last-minute flight options from Porto to Illinois for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated mayo 16, 2024.
Users seeking a last-minute flight from Porto to Illinois should consider booking one of these fares. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
jue. 5/2312:35 pmOPO - ORD
1 stop13h 35mUnited Airlines
mié. 6/59:30 amORD - OPO
2 stops15h 25mUnited Airlines
Deal found 5/15$733
jue. 5/237:20 pmOPO - ORD
2 stops22h 40mSWISS
mié. 6/52:20 pmORD - OPO
2 stops17h 25mSWISS
Deal found 5/15$884

One-way flights to Illinois from Porto

Search for one-way flight options from Porto to Illinois. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated mayo 16, 2024.
Take a look at some of the best available options we've come across on one-way flights from Porto to Illinois. Users needing a return flight from Porto to Illinois should utilize the search form above.
vie. 5/317:40 pmOPO - ORD
2 stops43h 15mMultiple Airlines
Deal found 5/15$401
lun. 11/412:40 pmOPO - ORD
2 stops25h 53mMultiple Airlines
Deal found 5/15$433
vie. 5/318:45 amOPO - ORD
3 stops37h 50mMultiple Airlines
Deal found 5/15$445
jue. 10/247:00 amOPO - ORD
2 stops19h 43mMultiple Airlines
Deal found 5/15$493
sáb. 9/216:10 amOPO - ORD
1 stop13h 49mMultiple Airlines
Deal found 5/15$500
mié. 11/66:30 amOPO - ORD
2 stops16h 50mMultiple Airlines
Deal found 5/15$524
jue. 10/241:30 pmOPO - ORD
1 stop13h 13mMultiple Airlines
Deal found 5/15$537
lun. 5/2710:30 pmOPO - ORD
3 stops32h 38mMultiple Airlines
Deal found 5/15$548
lun. 11/44:25 pmOPO - ORD
1 stop33h 00mTurkish Airlines
Deal found 5/15$557

Find flights from Porto to Illinois within your budget

Customize your flight search to find flights from Porto 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 2,637,452 searches. Data last updated mayo 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$766 - $16,778

Route

Depart

Return

Price

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

jue. 6/6

1 stop15h 00m

Chicago O'Hare Intl

jue. 6/20

1 stop11h 43m

$766

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

jue. 6/6

2 stops15h 52m

Chicago O'Hare Intl

jue. 6/20

1 stop11h 43m

$774

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

jue. 6/6

2 stops22h 40m

Chicago O'Hare Intl

jue. 6/20

2 stops36h 30m

$870

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

jue. 7/11

1 stop22h 50m

Chicago O'Hare Intl

sáb. 8/10

1 stop32h 40m

$1,046

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

jue. 7/11

1 stop15h 15m

Chicago O'Hare Intl

sáb. 8/10

2 stops15h 05m

$1,067

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

jue. 7/11

2 stops18h 24m

Chicago O'Hare Intl

sáb. 8/10

2 stops16h 00m

$1,097

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

jue. 7/11

3 stops47h 26m

Chicago O'Hare Intl

sáb. 8/10

2 stops37h 15m

$16,778

Flights are sorted by cheapest first

Deals found on 5/15

No data available for this route at this time. Please check back soon.

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 mayo 16, 2024.
See what other customers who have flown with United Airlines and SWISS from Porto to Illinois have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,673 reviews
Check prices

Crew

8.6

Boarding

8.2

Overall

8.0

Food

7.4

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Delta
8.0
Very good
10,673 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Crew

8.6

Boarding

8.2

Overall

8.0

Food

7.4

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

KLM
7.9
Good
1,568 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Crew

8.6

Boarding

8.2

Overall

8.0

Food

7.4

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

SWISS
7.8
Good
1,994 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Crew

8.6

Boarding

8.2

Overall

8.0

Food

7.4

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Austrian Airlines
7.7
Good
1,053 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Crew

8.6

Boarding

8.2

Overall

8.0

Food

7.4

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Turkish Airlines
7.4
Good
3,707 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Crew

8.6

Boarding

8.2

Overall

8.0

Food

7.4

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Related info for your journey

Find useful and relevant information for your journey from Porto 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 Porto to Illinois?

    Porto (OPO), located 6.8 mi from the city center, is the airport you fly out of when you book flights from Porto to Illinois.

  • Can I find flights from Porto to Illinois for under $800 on Cheapflights?

    Yes, there are multiple flights from Porto to Illinois for under $800. The cheapest flight booked recently is on United Airlines for just $766, but on average you can expect to pay $3,199.

  • Are there last-minute flights available from Porto to Illinois for under $800?

    There are currently 2+ open flights from Porto to Illinois within the next 7 days for less than $800.

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

    For one-way options, check prices for Turkish Airlines. According to our data, you can fly for as low as $557. Users have also found prices from $568 and $583 on TAP AIR PORTUGAL and Air Europa, respectively.

  • What does OPO to ORD mean?

    This is defined as Porto Airport (OPO) and Chicago O'Hare Intl Airport (ORD). Codes like Chicago O'Hare Intl Airport are often used to just call airports uniquely. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Chicago Midway Airport (MDW), Moline Quad-City Airport (MLI), Greater Peoria Airport (PIA), Bloomington-Normal Airport (BMI), Springfield Capital Airport (SPI).

  • Can I find deals for flights from Porto to Illinois that include extra baggage allowance?

    The amount of baggage you can bring on your Porto to Illinois flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Porto to Illinois with specific airlines?

    Yes, Cheapflights allows you to browse and filter Porto to Illinois flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Porto 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.

  • Can I find deals for flights from Porto to Illinois that allow pets onboard?

    Many airlines flying from Porto to Illinois offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Porto to Illinois?

    Yes, you can often find last-minute deals on Porto to Illinois flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Porto to Illinois flight deals updated?

    The Porto to Illinois flight deals you see on this page were last updated on 5/16.

See more FAQs

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Alternative routes for Porto to Illinois
See prices for flight routes from nearby airports that may be better suited for you.

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Top airline flying from Porto to Illinois

Discover the top airline that operate flights from Porto 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 2,637,452 searches. Data last updated mayo 16, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$866Average$879FlexibilityNo cancel feeOn-time69%
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Search flights from Porto to Illinois by cabin class

Find flights from Porto to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Porto to Illinois?

When you search for this flight from Porto to Illinois, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Porto to Illinois?

Cheapflights helps you find that perfect flight to Illinois from Porto by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Porto to Illinois with no change fees?

Certainly. Search results for flights to Illinois from Porto shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Porto to Illinois become cheaper?

Yes, Cheapflights offers price alerts on Porto to Illinois flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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