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O'Hare Intl

$94+ Cheap flights from Buffalo (BUF) to O'Hare Intl (ORD)

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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ORD
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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Cheapflights Tip: The best prices from Buffalo to Chicago O'Hare Intl are usually found in August or September, booked 71 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap flight deals from Buffalo to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to O'Hare Intl (ORD). 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 October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$178
(Booking.com)

One-way from

$94
(Frontier)

Popular in

February

Cheapest in

August

Average price

$314

Good round-trip deal

$336 or less

Good one-way deal

$184 or less
Provider with most accurate pricing for Buffalo-Chicago O'Hare Intl flight deals.
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Provider most trusted by Cheapflights users for Buffalo-Chicago O'Hare Intl flights.
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From Buffalo to Chicago O'Hare Intl
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One-way flight from Buffalo to Chicago O'Hare Intl
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Highest demand for flights based on searches. 10% potential increase in price ($40 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Buffalo to Chicago O'Hare Intl.
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Price to beat on a one-way flight from Buffalo to Chicago O'Hare Intl.
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Find flight deals from Buffalo to O'Hare Intl

Cheapest flights from Buffalo to O'Hare Intl
Explore the most affordable flight options available from Buffalo to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.

This Frontier deal was found by Cheapflights users on 10/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/245:24 pmBUF - ORD
1 stop8h 35mFrontier
Mon 10/276:50 amORD - BUF
1 stop8h 39mFrontier
Deal found 10/16$176
This Booking.com deal was found by Cheapflights users on 10/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/319:38 pmBUF - ORD
1 stop18h 30mFrontier
Sun 11/25:25 amORD - BUF
1 stop11h 39mFrontier
Deal found 10/15$178
This Booking.com deal was found by Cheapflights users on 10/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/131:04 pmBUF - ORD
1 stop11h 24mFrontier
Sun 11/161:50 pmORD - BUF
1 stop5h 19mFrontier
Deal found 10/14$194
This Mytrip deal was found by Cheapflights users on 10/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/110:53 amBUF - ORD
1 stop29h 06mFrontier
Sun 11/95:25 amORD - BUF
1 stop11h 39mFrontier
Deal found 10/16$196
This JetBlue deal was found by Cheapflights users on 10/14. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/105:00 pmBUF - ORD
1 stop5h 52mJetBlue
Tue 12/167:00 amORD - BUF
1 stop7h 59mJetBlue
Deal found 10/14$203
This JetBlue deal was found by Cheapflights users on 10/14. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/146:05 amBUF - ORD
1 stop5h 30mJetBlue
Tue 12/167:00 amORD - BUF
1 stop7h 59mJetBlue
Deal found 10/14$206
This Priceline deal was found by Cheapflights users on 10/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/142:42 pmBUF - ORD
1 stop10h 29mFrontier
Sun 11/161:50 pmORD - BUF
1 stop5h 19mFrontier
Deal found 10/15$208
This JetBlue deal was found by Cheapflights users on 10/14. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1111:48 amBUF - ORD
1 stop8h 55mJetBlue
Sat 12/1311:25 amORD - BUF
1 stop4h 59mJetBlue
Deal found 10/14$209
This JetBlue deal was found by Cheapflights users on 10/14. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:00 pmBUF - ORD
1 stop5h 52mJetBlue
Mon 12/87:00 amORD - BUF
1 stop7h 59mJetBlue
Deal found 10/14$211
This Trip.com deal was found by Cheapflights users on 10/15. 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.
Fri 12/55:00 pmBUF - ORD
1 stop5h 52mJetBlue
Sun 1/1110:45 amORD - BUF
1 stop7h 05mJetBlue
Deal found 10/15$215
This Frontier deal was found by Cheapflights users on 10/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/61:04 pmBUF - ORD
1 stop11h 24mFrontier
Sun 11/95:25 amORD - BUF
1 stop11h 39mFrontier
Deal found 10/15$216
This JetBlue deal was found by Cheapflights users on 10/13. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/105:00 pmBUF - ORD
1 stop5h 52mJetBlue
Sun 1/182:05 pmORD - BUF
1 stop8h 50mJetBlue
Deal found 10/13$220

Cheapflights Fare Finder

 
Customize your flight search to find flights from Buffalo to O'Hare Intl 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 2,558,603 searches. Data last updated October 16, 2025.
Use the filters below to find and compare flights from Buffalo to Chicago O'Hare Intl Airport that are best for you.

Fly from

Buffalo

Fly to

O'Hare Intl

Route

Depart

Return

Price

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Wed 11/12

12:30 pm-5:55 pm

1 stop6h 25m

Chicago O'Hare Intl

Wed 11/19

6:45 am-3:39 pm

1 stop7h 54m

$206

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 12/6

6:05 am-10:35 am

1 stop5h 30m

Chicago O'Hare Intl

Sun 1/11

10:45 am-6:50 pm

1 stop7h 05m

$209

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Wed 12/10

5:00 pm-9:52 pm

1 stop5h 52m

Chicago O'Hare Intl

Sun 1/18

2:05 pm-11:55 pm

1 stop8h 50m

$220

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 12/11

11:48 am-7:43 pm

1 stop8h 55m

Chicago O'Hare Intl

Sun 1/18

2:05 pm-11:55 pm

1 stop8h 50m

$223

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 12/4

11:48 am-7:43 pm

1 stop8h 55m

Chicago O'Hare Intl

Mon 12/8

7:00 am-3:59 pm

1 stop7h 59m

$223

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 1/16

2:45 pm-7:45 pm

1 stop6h 00m

Chicago O'Hare Intl

Sun 1/18

2:05 pm-11:55 pm

1 stop8h 50m

$246

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Mon 11/10

12:29 pm-11:28 pm

1 stop11h 59m

Chicago O'Hare Intl

Sat 11/15

8:00 am-6:17 pm

1 stop9h 17m

$247

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 10/31

12:30 pm-5:55 pm

1 stop6h 25m

Chicago O'Hare Intl

Tue 11/4

7:00 am-3:39 pm

1 stop7h 39m

$253

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Wed 12/10

2:57 pm-7:20 pm

1 stop5h 23m

Chicago O'Hare Intl

Tue 1/20

5:55 pm-11:57 pm

1 stop5h 02m

$260

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 11/8

6:20 am-9:12 am

1 stop3h 52m

Chicago O'Hare Intl

Sat 11/8

4:56 pm-10:52 pm

1 stop4h 56m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/14

Showing 1-10 of 22 results
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Compare providers for flights from Buffalo to O'Hare Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Buffalo to O'Hare Intl in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Buffalo-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Buffalo-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Buffalo-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Buffalo-Chicago O'Hare Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Buffalo-Chicago O'Hare Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Buffalo to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Buffalo 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.

Cheapflights Insights

Everything you need to know about your flight from Buffalo to Chicago O'Hare Intl Airport

How far ahead should I book a flight from Buffalo to Chicago O'Hare Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Buffalo to O'Hare Intl. Price data was last updated on October 10, 2025.

Booking 71 days in advance of your planned departure date is, on average, the best time to get cheap flights from Buffalo to Chicago O'Hare Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Buffalo to Chicago O'Hare Intl Airport?

Currently, July is the cheapest month in which you can book a flight from Buffalo to Chicago O'Hare Intl Airport (average of $77). Flying from Buffalo to Chicago O'Hare Intl Airport in January is currently the most expensive (average of $232). 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 BUF to ORD?

Find hourly flight availability from Buffalo to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 16, 2025.

It’s optimal to fly from Buffalo to Chicago O'Hare Intl Airport in the evening. By choosing this option you can save up to 61% on the cost of your flight, compared to a flight at noon.

The best insider tips for Buffalo to Chicago O'Hare Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Buffalo to Chicago O'Hare Intl Airport trip
Airlines
Qatar Airways

Qatar Airways allows only one carry-on item in economy, so plan your packing carefully.


Qatar Airways offers extra legroom seats for a fee, typically in emergency exit rows and bulkhead seats.

Read more about Qatar Airwaysby Brandon Schultz
United Airlines

United's Economy Plus offers extra legroom and is available for no extra fee for MileagePlus Premier members.


United's Basic Economy allows only a personal item, no carry-on bags, unless exceptions apply.

Read more about United Airlinesby Harriet Baskas
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on Qatar Airways

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated October 16, 2025.
Read reviews from past customers who have flown United Airlines, American Airlines, and Frontier from Buffalo to Chicago O'Hare Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,982 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
8,982 reviews
United Airlines
7.4
Good
8,982 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
American Airlines
7.2
Good
11,043 reviews
United Airlines
7.4
Good
8,982 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Frontier
5.8
Fair
3,137 reviews
United Airlines
7.4
Good
8,982 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

Related info for your journey

Find useful and relevant information for your journey from Buffalo to O'Hare Intl. 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 Buffalo to Chicago O'Hare Intl?

    For a flight from Buffalo to Chicago O'Hare Intl, you will be flying from Buffalo. Buffalo (BUF) is just 8.3 mi from the center of the city. Buffalo is the only Buffalo airport and it handles 25 outbound flights to Chicago O'Hare Intl per day. 3 airlines have flights to Chicago O'Hare Intl from Buffalo on a regular basis.

  • How long is the flight from Buffalo to Chicago O'Hare Intl Airport?

    Departing from Buffalo to Chicago O'Hare Intl Airport will take you 6h 25m. The distance from Buffalo to Chicago O'Hare Intl Airport is about 472 mi.

  • What are the cheapest airlines flying from Buffalo to Chicago O'Hare Intl Airport round-trip?

    Frontier, at $58, was found to be the cheapest airline from Buffalo to Chicago O'Hare Intl Airport.Alternate airlines to your destination round-trip include American Airlines and United Airlines. Frontier is currently priced 82% below the average price you’ll pay for this route.

  • What are the most reliable airlines from Buffalo to Chicago O'Hare Intl Airport?

    Before booking your flight to Chicago O'Hare Intl Airport from Buffalo, check out the most reliable airlines to get you to your destination on time: SkyWest Airlines (100%), Republic Airways (100%), Copa Airlines( 93%).

  • What are the cheapest flights from Buffalo to Chicago O'Hare Intl Airport?

    The cheapest flight price from Buffalo to Chicago O'Hare Intl Airport is $118. On average you can expect to pay $859. The most popular route, (Buffalo - Chicago O'Hare Intl), can usually be booked for $203.

  • Can I find deals for flights from Buffalo to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Buffalo to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Buffalo to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Buffalo to O'Hare Intl.

  • Can I find deals for business class flights from Buffalo to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Buffalo to O'Hare Intl 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 Buffalo to Chicago O'Hare Intl Airport?

    Currently, July is the cheapest month in which you can book a flight from Buffalo to Chicago O'Hare Intl Airport (average of $77). Flying from Buffalo to Chicago O'Hare Intl Airport in January is currently the most expensive (average of $232). 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.

See more FAQs

Traveling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Skokie
Des Plaines
Gurnee
Hoffman Estates
Elgin
Racine
Oak Brook
Elk Grove Village
Beloit
Rockford
Naperville
Downers Grove
Orland Park
Merrillville
Bridgeview
Warrenville
Joliet
Waukegan

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Alternative routes for Buffalo to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to O'Hare Intl flights
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Rochester to Midway flights
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Stewart to Rockford flights
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Top 3 airlines flying from Buffalo to O'Hare Intl

Discover the top 3 airlines that operate flights from Buffalo to O'Hare Intl. 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 2,558,603 searches. Data last updated October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$198FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$161Average$328FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$175Average$377FlexibilityNo cancel feeOn-time69%

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