San Diego

$119+ Cheap flights from Boston to San Diego (BOS - SAN)

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 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SAN
Nov 9 — Nov 161
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Find cheap flights from Boston to San Diego with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from Boston Logan Intl to San Diego are usually found in January or November, booked 56 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Boston to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to San Diego (SAN). 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 10, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$187
(Priceline)

One-way from

$119
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$352

Good round-trip deal

$277 or less

Good one-way deal

$177 or less
Provider with most accurate pricing for Boston Logan Intl-San Diego flight deals.
Provider most trusted by Cheapflights users for Boston Logan Intl-San Diego flights.
From Boston Logan Intl to San Diego
One-way flight from Boston Logan Intl to San Diego
High demand for flights, 1% potential price rise
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Average for round-trip flights in October 2025
Price to beat on a round-trip flight from Boston Logan Intl to San Diego.
Price to beat on a one-way flight from Boston Logan Intl to San Diego.

Find flight deals from Boston to San Diego

Cheapest flights from Boston to San Diego
Explore the most affordable flight options available from Boston to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 10, 2025.

This Priceline deal was found by Cheapflights users on 10/9. 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.
Wed 10/297:00 amBOS - SAN
Nonstop6h 39mJetBlue
Fri 10/319:05 pmSAN - BOS
1 stop7h 52mJetBlue
Deal found 10/9$187
This Expedia deal was found by Cheapflights users on 10/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/288:30 amBOS - SAN
1 stop14h 01mJetBlue
Fri 10/312:52 pmSAN - BOS
Nonstop5h 24mJetBlue
Deal found 10/9$192
This JetBlue deal was found by Cheapflights users on 10/8. 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.
Fri 10/3111:25 amBOS - SAN
1 stop11h 06mJetBlue
Sun 11/28:39 pmSAN - BOS
Nonstop5h 31mJetBlue
Deal found 10/8$194
This JetBlue deal was found by Cheapflights users on 10/9. 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.
Fri 10/247:06 pmBOS - SAN
1 stop16h 50mJetBlue
Fri 10/312:52 pmSAN - BOS
Nonstop5h 24mJetBlue
Deal found 10/9$197
This American Airlines deal was found by Cheapflights users on 10/9. 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.
Fri 10/3111:05 amBOS - SAN
1 stop10h 42mAmerican Airlines
Mon 11/310:49 pmSAN - BOS
1 stop8h 46mAmerican Airlines
Deal found 10/9$198
This JetBlue deal was found by Cheapflights users on 10/8. 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 10/303:45 pmBOS - SAN
Nonstop6h 31mJetBlue
Fri 10/318:39 pmSAN - BOS
Nonstop5h 31mJetBlue
Deal found 10/8$199
This Rumbo deal was found by Cheapflights users on 10/7. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/237:20 amBOS - SAN
Nonstop6h 29mJetBlue
Fri 10/318:39 pmSAN - BOS
Nonstop5h 31mJetBlue
Deal found 10/7$201
This KAYAK deal was found by Cheapflights users on 10/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/74:24 pmBOS - SAN
Nonstop6h 46mAlaska Airlines
Sat 12/139:15 amSAN - BOS
Nonstop5h 37mAlaska Airlines
Deal found 10/8$202
This Delta deal was found by Cheapflights users on 10/8. 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.
Fri 10/315:25 pmBOS - SAN
Nonstop6h 19mDelta
Sat 11/810:15 pmSAN - BOS
Nonstop5h 38mDelta
Deal found 10/8$207
This Priceline deal was found by Cheapflights users on 10/7. 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.
Wed 10/227:20 amBOS - SAN
Nonstop6h 29mJetBlue
Wed 10/221:55 pmSAN - BOS
Nonstop5h 35mJetBlue
Deal found 10/7$212
This Trip.com deal was found by Cheapflights users on 10/7. 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 11/104:24 pmBOS - SAN
Nonstop6h 39mHawaiian Airlines
Tue 11/189:15 amSAN - BOS
Nonstop5h 40mHawaiian Airlines
Deal found 10/7$215
This Cheapflightsfares deal was found by Cheapflights users on 10/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/114:24 pmBOS - SAN
Nonstop6h 46mAlaska Airlines
Mon 12/159:15 amSAN - BOS
Nonstop5h 37mAlaska Airlines
Deal found 10/9$216

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to San Diego 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 10, 2025.
Use the filters below to find and compare flights from Boston to San Diego that are best for you.

Fly from

Boston

Fly to

San Diego

Route

Depart

Return

Price

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Fri 10/24

7:06 pm-8:56 am

1 stop16h 50m

San Diego

Fri 10/31

2:52 pm-11:16 pm

Nonstop5h 24m

$197

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sat 11/1

5:25 pm-8:44 pm

Nonstop6h 19m

San Diego

Sat 11/15

10:28 pm-6:55 am

Nonstop5h 27m

$217

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sat 11/8

5:25 pm-8:44 pm

Nonstop6h 19m

San Diego

Sat 11/15

10:28 pm-6:55 am

Nonstop5h 27m

$217

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sat 11/1

4:24 pm-8:03 pm

Nonstop6h 39m

San Diego

Sat 11/15

8:02 pm-3:41 pm

1 stop16h 39m

$227

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Fri 10/24

5:30 am-11:24 am

1 stop8h 54m

San Diego

Sun 10/26

8:40 pm-7:20 am

1 stop7h 40m

$237

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sat 12/6

4:30 pm-10:30 pm

1 stop9h 00m

San Diego

Fri 12/12

12:50 pm-11:41 pm

1 stop7h 51m

$237

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 11/6

4:50 pm-10:29 pm

1 stop8h 39m

San Diego

Sat 11/8

6:15 am-4:50 pm

1 stop7h 35m

$237

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Tue 11/11

5:00 pm-10:25 pm

1 stop8h 25m

San Diego

Wed 11/19

10:30 am-10:45 pm

2 stops9h 15m

$242

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 10/22

9:10 am-4:25 pm

1 stop10h 15m

San Diego

Wed 10/29

8:50 am-9:20 pm

2 stops9h 30m

$242

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sat 11/15

4:45 pm-9:50 pm

1 stop8h 05m

San Diego

Tue 11/18

8:05 pm-8:15 am

2 stops9h 10m

$242

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/8

Showing 1-10 of 21 results
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Compare providers for flights from Boston to San Diego

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 Boston to San Diego in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
JustAirTicketPrice Accuracy-Trust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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 Boston-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-San Diego 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 Boston-San Diego 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 Boston to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Boston 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 Boston to San Diego

How far ahead should I book a flight from Boston to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from Boston to San Diego. Price data was last updated on October 3, 2025.

The price you pay for your flight from Boston to San Diego may vary depending on when you book. For the best chance of a lower fare, look to book 49 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Boston to San Diego?

Currently, January is the cheapest month in which you can book a flight from Boston to San Diego (average of $114). Flying from Boston to San Diego in July is currently the most expensive (average of $197). 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 BOS to SAN?

Find hourly flight availability from Boston to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 10, 2025.

When flying from Boston to San Diego, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 64% versus a flight at noon.

What is the cheapest day to fly from Boston to San Diego?

Use this chart to determine the cheapest time to fly round-trip from Boston to San Diego. Price data was last updated on October 5, 2025.

Travelers seeking maximum savings on their Boston to San Diego flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Boston to San Diego 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 Boston to San Diego trip
Airports
BOS

Use the FlyLogan App to pre-order food and save time at BOS. Most restaurants participate, making it a convenient option.

Read more about BOSby Paul Rubio
SAN

Consider using the free San Diego Flyer shuttle for a budget-friendly transfer between SAN and the Old Town Transit Center.

Read more about SANby Blane Bachelor
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on SAN

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Paul Rubio

Paul Rubio

Expert on BOS

Paul Rubio

Paul Rubio

Travel journalist and photographer Paul Rubio is a Miami native (and current resident), who has lived in nine countries and traveled to 137. He is an expert in luxury travel, eco-travel, loyalty programs, hotels, airports and airlines. He is a contributing editor at AFAR, Condé Nast Traveler, LUXURY Magazine, and Palm Beach Illustrated.

Read more

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated October 10, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and Hawaiian Airlines from Boston to San Diego by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
8.0
Very good

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Related info for your journey

Find useful and relevant information for your journey from Boston to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airports do I use to fly from Boston to San Diego?

    To fly from Boston to San Diego, you need to book a flight from Logan Intl (BOS) to San Diego (SAN). Nonstop flights to San Diego from Boston Logan Intl take 6h 06m on average. When it comes time to book airfare, you have a few options: there are 14 outbound flights from Logan Intl to San Diego offered by 10 different airlines.

  • How popular is this Boston to San Diego flight route?

  • How long is the flight from Boston to San Diego?

    JetBlue and Delta can get you from Boston to San Diego in just under 6h 19m. Your travel time can differ by up to 10h 31m. There are 2581 mi between Boston and San Diego. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Boston to San Diego round-trip?

    Currently priced at $84, Frontier will fly you from Boston to San Diego and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Spirit Airlines and Delta - these airlines can fly you to your destination from $87 and $138, respectively. Frontier is currently priced 77% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Boston to San Diego one-way?

    The cheapest airlines for a one-way flight from Boston to San Diego are United Airlines ($119), Delta ($120), and Alaska Airlines ($123).

  • What are the most reliable airlines from Boston to San Diego?

    No one likes to see their flight delayed. When booking a flight from Boston to San Diego consider choosing TAP AIR PORTUGAL (93%), Etihad Airways (92%) or JetBlue (90%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Boston to San Diego?

    The cheapest flight price from Boston to San Diego is $118. On average you can expect to pay $977. The most popular route, (Boston Logan Intl - San Diego), can usually be booked for $128.

  • Where are the most common layover locations when flying from Boston to San Diego?

  • What are some popular things to do or see while on a layover in Philadelphia?

    Most Philadelphia visitors opt to spend their time experiencing Rittenhouse Square, University of Pennsylvania, and Citizens Bank Park. Rittenhouse Square, University of Pennsylvania, and Citizens Bank Park are located about 6.1 mi, 5.7 mi, and 4.3 mi, respectively from Philadelphia. Travelers can book a car rental at Philadelphia for about $49 per day to make their sightseeing more efficient.

  • What are some popular points of interest to see during a layover in Phoenix?

    Phoenix travelers tend to visit Chase Field, Desert Ridge Marketplace, and Musical Instrument Museum more than any other notable places. Chase Field, Desert Ridge Marketplace and Musical Instrument Museum are located about 4.0 mi, 16.7 mi, and 16.1 mi, respectively from Phoenix Sky Harbor Intl if you are interested in checking them out. Those landing in Phoenix looking to spend some time exploring during their layover can rent a car for about $56 per day.

  • What are points of interest worth seeing during a layover in Washington, D.C.?

    If you're on a layover in Washington, D.C. and looking for things to do, consider visiting White House, National Mall, or U.S. Capitol. White House, National Mall, and U.S. Capitol can be visited by traveling about 22.4 mi, 23.3 mi, and 24.0 mi respectively from Washington, D.C. Dulles Intl. Travelers in need of a car in Washington, D.C. can rent one for about $45 per day.

  • Where are the least popular layover locations for Boston to San Diego flights?

  • Can I find deals for flights from Boston to San Diego that include hotel bookings?

    Yes. In addition to deals on Boston to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to San Diego?

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

  • Can I find deals for business class flights from Boston to San Diego?

    Yes. Cheapflights offers flight deals from Boston to San Diego 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 Boston to San Diego?

    Currently, January is the cheapest month in which you can book a flight from Boston to San Diego (average of $114). Flying from Boston to San Diego in July is currently the most expensive (average of $197). 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 San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
La Mesa
Poway
Lemon Grove
Imperial Beach
National City

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Top 10 airlines flying from Boston to San Diego

Discover the top 10 airlines that operate flights from Boston to San Diego. 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 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$84Average$194FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$87Average$299FlexibilityNo cancel feeOn-time65%
DeltaCheapest$138Average$355FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$138Average$352FlexibilityNo cancel feeOn-time85%
Sun Country AirCheapest$142Average$235FlexibilityNo cancel feeOn-time83%
JetBlueCheapest$193Average$371FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$237Average$422FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$247Average$427FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$256Average$463FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$286Average$518FlexibilityNo cancel feeOn-time63%

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