Developers · Datasets
Transfer partner ratios
14 curated credit-card-to-loyalty-programme transfer ratios and bonus terms.
14 rows · verified through 2026-06-28 · view the human page
Transfer ratios are curated and carry a dataset-level verification date rather than a per-row one. Active bonuses change frequently; check the source URL on each row before transferring.
GET https://milesmosaic.com/api/public/v1/transfers
{
"data": [
{
"from": "Chase Ultimate Rewards",
"to": "United MileagePlus",
"ratio": "1:1",
"ratio_num": 1,
"bonus": "",
"source_name": "Chase Ultimate Rewards transfer partners",
"source_url": "https://creditcards.chase.com/a1/sapphire/transferpartners",
"ratio_from": 1,
"ratio_to": 1,
"bonus_per_block": 0,
"bonus_block_size": 0,
"bonus_pct": 0
},
{
"from": "Chase Ultimate Rewards",
"to": "British Airways Executive Club",
"ratio": "1:1",
"ratio_num": 1,
"bonus": "",
"source_name": "Chase Ultimate Rewards transfer partners",
"source_url": "https://creditcards.chase.com/a1/sapphire/transferpartners",
"ratio_from": 1,
"ratio_to": 1,
"bonus_per_block": 0,
"bonus_block_size": 0,
"bonus_pct": 0
},
{
"from": "Chase Ultimate Rewards",
"to": "Air France/KLM Flying Blue",
"ratio": "1:1",
"ratio_num": 1,
"bonus": "",
"source_name": "Chase Ultimate Rewards transfer partners",
"source_url": "https://creditcards.chase.com/a1/sapphire/transferpartners",
"ratio_from": 1,
"ratio_to": 1,
"bonus_per_block": 0,
"bonus_block_size": 0,
"bonus_pct": 0
},
{
"from": "Chase Ultimate Rewards",
"to": "Hyatt World of Hyatt",
"ratio": "1:1",
"ratio_num": 1,
"bonus": "",
"source_name": "Chase Ultimate Rewards transfer partners",
"source_url": "https://creditcards.chase.com/a1/sapphire/transferpartners",
"ratio_from": 1,
"ratio_to": 1,
"bonus_per_block": 0,
"bonus_block_size": 0,
"bonus_pct": 0
},
{
"from": "Amex Membership Rewards",
"to": "Delta SkyMiles",
"ratio": "1:1",
"ratio_num": 1,
"bonus": "",
"source_name": "Amex Membership Rewards transfer partners",
"source_url": "https://www.americanexpress.com/en-us/rewards/membership-rewards/transfer-partners/",
"ratio_from": 1,
"ratio_to": 1,
"bonus_per_block": 0,
"bonus_block_size": 0,
"bonus_pct": 0
},
{
"from": "Amex Membership Rewards",
"to": "British Airways Executive Club",
"ratio": "1:1",
"ratio_num": 1,
"bonus": "",
"source_name": "Amex Membership Rewards transfer partners",
"source_url": "https://www.americanexpress.com/en-us/rewards/membership-rewards/transfer-partners/",
"ratio_from": 1,
"ratio_to": 1,
"bonus_per_block": 0,
"bonus_block_size": 0,
"bonus_pct": 0
},
{
"from": "Amex Membership Rewards",
"to": "Air France/KLM Flying Blue",
"ratio": "1:1",
"ratio_num": 1,
"bonus": "",
"source_name": "Amex Membership Rewards transfer partners",
"source_url": "https://www.americanexpress.com/en-us/rewards/membership-rewards/transfer-partners/",
"ratio_from": 1,
"ratio_to": 1,
"bonus_per_block": 0,
"bonus_block_size": 0,
"bonus_pct": 0
},
{
"from": "Amex Membership Rewards",
"to": "Marriott Bonvoy",
"ratio": "1:1",
"ratio_num": 1,
"bonus": "",
"source_name": "Amex Membership Rewards transfer partners",
"source_url": "https://www.americanexpress.com/en-us/rewards/membership-rewards/transfer-partners/",
"ratio_from": 1,
"ratio_to": 1,
"bonus_per_block": 0,
"bonus_block_size": 0,
"bonus_pct": 0
},
{
"from": "Citi ThankYou Rewards",
"to": "American Airlines AAdvantage",
"ratio": "1:1",
"ratio_num": 1,
"bonus": "",
"source_name": "Citi ThankYou transfer partners",
"source_url": "https://www.citi.com/credit-cards/citi-thankyou-points/transfer-to-airline-miles",
"ratio_from": 1,
"ratio_to": 1,
"bonus_per_block": 0,
"bonus_block_size": 0,
"bonus_pct": 0
},
{
"from": "Citi ThankYou Rewards",
"to": "Air France/KLM Flying Blue",
"ratio": "1:1",
"ratio_num": 1,
"bonus": "",
"source_name": "Citi ThankYou transfer partners",
"source_url": "https://www.citi.com/credit-cards/citi-thankyou-points/transfer-to-airline-miles",
"ratio_from": 1,
"ratio_to": 1,
"bonus_per_block": 0,
"bonus_block_size": 0,
"bonus_pct": 0
},
{
"from": "Capital One Miles",
"to": "Air France/KLM Flying Blue",
"ratio": "1:1",
"ratio_num": 1,
"bonus": "",
"source_name": "Capital One transfer partners",
"source_url": "https://www.capitalone.com/learn-grow/money-management/transfer-capital-one-miles/",
"ratio_from": 1,
"ratio_to": 1,
"bonus_per_block": 0,
"bonus_block_size": 0,
"bonus_pct": 0
},
{
"from": "Capital One Miles",
"to": "British Airways Executive Club",
"ratio": "1:1",
"ratio_num": 1,
"bonus": "",
"source_name": "Capital One transfer partners",
"source_url": "https://www.capitalone.com/learn-grow/money-management/transfer-capital-one-miles/",
"ratio_from": 1,
"ratio_to": 1,
"bonus_per_block": 0,
"bonus_block_size": 0,
"bonus_pct": 0
},
{
"from": "Marriott Bonvoy",
"to": "United MileagePlus",
"ratio": "3:1",
"ratio_num": 0.333,
"bonus": "5,000 bonus miles on every 60,000 Bonvoy points transferred",
"bonus_per_block": 5000,
"bonus_block_size": 60000,
"source_name": "Marriott Bonvoy airline transfer partners",
"source_url": "https://www.marriott.com/loyalty/redeem/travel/flights.mi",
"ratio_from": 3,
"ratio_to": 1,
"bonus_pct": 0
},
{
"from": "Marriott Bonvoy",
"to": "American Airlines AAdvantage",
"ratio": "3:1",
"ratio_num": 0.333,
"bonus": "5,000 bonus miles on every 60,000 Bonvoy points transferred",
"bonus_per_block": 5000,
"bonus_block_size": 60000,
"source_name": "Marriott Bonvoy airline transfer partners",
"source_url": "https://www.marriott.com/loyalty/redeem/travel/flights.mi",
"ratio_from": 3,
"ratio_to": 1,
"bonus_pct": 0
}
],
"_meta": {
"source": "Miles Mosaic",
"license": "Attribution required. Free to reuse with visible credit and a link back; see https://milesmosaic.com/developers/terms/ for full terms.",
"canonical_url": "https://milesmosaic.com/transfer-calculator/?utm_source=api",
"last_verified": "2026-06-28",
"as_of": "2026-08-16"
}
}