{ "note": "Combined one-way fares, cheapest-first. 'enterSource'/'exitSource' show whether each leg came from a live SerpApi search or cached Travelpayouts data (treat cached fares as a signal to verify, not a bookable price). 'premiumOverSingleDestination' is how much more the two-city trip costs versus just visiting the cheaper city alone. Not yet compared against historical baselines — that comes once there's more history.", "singleDestinationEstimates": { "ATL|HNL": 476.93, "ATL|ICN": 917, "ATL|LHR": 806.67, "ATL|MEX": 383.86, "ATL|NBO": 840.22, "ATL|NRT": 1105.16, "ATL|SIN": 1014.03, "ATL|YVR": 237.12, "AUS|CUN": 539.94, "AUS|JFK": 301.22, "BNA|JFK": 192.02, "BNA|LAS": 290.99, "BNA|MIA": 226.28, "BNA|TPA": 287.51, "BNA|YYZ": 284.68, "BOS|BCN": 644.67, "BOS|BOM": 787.9, "BOS|CDG": 581.87, "BOS|CHS": 283.46, "BOS|CMN": 1083.68, "BOS|CUN": 347.78, "BOS|DEN": 218, "BOS|FCO": 466.45, "BOS|GRU": 601.07, "BOS|GUA": 517.11, "BOS|ICN": 1231.13, "BOS|JFK": 186.58, "BOS|KEF": 798.27, "BOS|LHR": 526.81, "BOS|MAD": 655.91, "BOS|MIA": 159.35, "BOS|OGG": 626.2, "BOS|PHX": 336.02, "BOS|PUJ": 333.21, "BOS|SFO": 318, "BOS|SGN": 1216.84, "BOS|VIE": 1030.79, "BOS|YUL": 364.04, "BOS|YYZ": 268.09, "BOS|ZRH": 889.48, "CLT|AUA": 625.29, "CLT|CHS": 366.01, "CLT|CUN": 468.86, "DEN|CUN": 384, "DEN|GDL": 314.01, "DEN|MEX": 376.26, "DEN|YVR": 422.33, "DFW|AUH": 1080.45, "DFW|AUS": 220.57, "DFW|CAI": 996.66, "DFW|CUN": 293.11, "DFW|DXB": 738.64, "DFW|HNL": 404.53, "DFW|ICN": 950.35, "DFW|IST": 768.89, "DFW|JED": 886.14, "DFW|JFK": 251.8, "DFW|MEX": 255.36, "DFW|MNL": 862.05, "DFW|SYD": 1510.35, "DFW|YVR": 361.58, "DTW|CDG": 776.35, "DTW|YUL": 636.93, "DTW|YYZ": 490.93, "EWR|AMM": 1201.65, "EWR|AMS": 747.29, "EWR|BCN": 607.02, "EWR|BER": 620.49, "EWR|BGI": 435.87, "EWR|BKK": 789.73, "EWR|BNA": 188.98, "EWR|BOG": 684.52, "EWR|BRU": 629.33, "EWR|BUD": 759.05, "EWR|CAI": 853.32, "EWR|CDG": 612.19, "EWR|CHS": 375.06, "EWR|CMN": 727.69, "EWR|CPT": 1374.83, "EWR|CUN": 310.28, "EWR|DUB": 614.48, "EWR|FCO": 562.71, "EWR|GIG": 722.65, "EWR|GRU": 607.9, "EWR|GUA": 336.03, "EWR|HKG": 854.64, "EWR|HNL": 631.78, "EWR|ICN": 710.02, "EWR|IST": 715.99, "EWR|JED": 951.49, "EWR|JNB": 1381.54, "EWR|KEF": 764.48, "EWR|LHR": 646.82, "EWR|LIS": 708.14, "EWR|MAD": 573.61, "EWR|MBJ": 417.12, "EWR|MEX": 326.97, "EWR|MNL": 915.43, "EWR|MUC": 595.22, "EWR|NAS": 435.34, "EWR|NRT": 794.12, "EWR|PEK": 996.13, "EWR|PHX": 326.1, "EWR|PRG": 712.92, "EWR|PSP": 475.56, "EWR|PUJ": 412.84, "EWR|PVG": 938.47, "EWR|RUH": 839.43, "EWR|SGN": 885.83, "EWR|SIN": 1001.18, "EWR|SJO": 450.36, "EWR|SJU": 264.22, "EWR|SYD": 1423.82, "EWR|TPE": 966.58, "EWR|UIO": 438.44, "EWR|YUL": 255.01, "EWR|YVR": 463.65, "EWR|YYZ": 280.02, "EWR|ZRH": 746.42, "IAD|AMS": 903.33, "IAD|AUH": 1052.27, "IAD|BKK": 947.66, "IAD|CAI": 779.3, "IAD|CDG": 807.98, "IAD|CMN": 767.45, "IAD|DEL": 914.4, "IAD|DOH": 1041.17, "IAD|DXB": 773.89, "IAD|EZE": 953.86, "IAD|GUA": 495.55, "IAD|HKG": 885.2, "IAD|IST": 792.6, "IAD|JED": 651, "IAD|LHR": 784.9, "IAD|MAD": 700.84, "IAD|NRT": 1117.97, "IAD|PHX": 354.75, "IAD|PUJ": 513.82, "IAD|SAL": 496.02, "IAD|YUL": 480.63, "IAD|YYZ": 238.18, "IAH|AUS": 175.61, "IAH|CUN": 336.69, "IAH|GUA": 614.54, "IAH|MEX": 233.84, "IAH|NRT": 694.73, "IAH|SAL": 400.02, "JFK|AMS": 732.75, "JFK|ARN": 992.62, "JFK|ATH": 548.02, "JFK|AUA": 448.06, "JFK|AUS": 301.22, "JFK|BAH": 863.35, "JFK|BCN": 569.91, "JFK|BER": 585.12, "JFK|BEY": 1162.17, "JFK|BGI": 422.78, "JFK|BKK": 851.02, "JFK|BNA": 192.02, "JFK|BOM": 801.5, "JFK|BOS": 172.47, "JFK|BRU": 592.57, "JFK|CAI": 664.76, "JFK|CDG": 597.94, "JFK|CGK": 876.63, "JFK|CHS": 361.9, "JFK|CMN": 620.25, "JFK|CPT": 977.45, "JFK|CUN": 350.36, "JFK|DEL": 653.13, "JFK|DOH": 929.27, "JFK|DUB": 635.43, "JFK|DXB": 753.45, "JFK|FCO": 434.32, "JFK|GDL": 527.73, "JFK|GIG": 547.84, "JFK|GRU": 623.02, "JFK|GUA": 370.53, "JFK|HEL": 665.74, "JFK|HKG": 932.57, "JFK|HNL": 331.86, "JFK|ICN": 868.45, "JFK|IST": 641.58, "JFK|JED": 701.17, "JFK|JNB": 1206.24, "JFK|KOA": 579.77, "JFK|KUL": 929.24, "JFK|LAS": 297.22, "JFK|LAX": 320.15, "JFK|LHR": 656.42, "JFK|LIS": 690.21, "JFK|MAD": 541.67, "JFK|MBJ": 412.85, "JFK|MCO": 216.41, "JFK|MCT": 878.12, "JFK|MEL": 1398.87, "JFK|MEX": 268.86, "JFK|MNL": 912.16, "JFK|MUC": 564.76, "JFK|NAS": 417.38, "JFK|NBO": 940.1, "JFK|NRT": 1068.01, "JFK|OSL": 682.81, "JFK|PHX": 314.12, "JFK|PRG": 586.87, "JFK|PSP": 477.05, "JFK|PTY": 923, "JFK|PVG": 1009.61, "JFK|RUH": 785.96, "JFK|SAL": 580.51, "JFK|SGN": 978.81, "JFK|SIN": 1055.71, "JFK|SJO": 498.94, "JFK|SJU": 242.06, "JFK|TLV": 595.99, "JFK|TPE": 1096.15, "JFK|UIO": 429.86, "JFK|VIE": 672.02, "JFK|WAW": 501.06, "JFK|YVR": 427.02, "JFK|YYZ": 333.11, "JFK|ZRH": 629.42, "LAS|BNA": 290.99, "LAS|CUN": 509.92, "LAS|HNL": 291.05, "LAS|JFK": 297.22, "LAS|LHR": 806.64, "LAS|MEX": 275.75, "LAS|OGG": 420.15, "LAS|PSP": 652.85, "LAS|SYD": 1199.62, "LAS|YVR": 176.26, "LAS|YYZ": 302.49, "LAX|AKL": 909.88, "LAX|BCN": 646.04, "LAX|BKK": 743.68, "LAX|BUD": 990.96, "LAX|CAI": 950.98, "LAX|CDG": 718.31, "LAX|CGK": 684.02, "LAX|CHS": 263.01, "LAX|CUN": 335.15, "LAX|DOH": 1248.65, "LAX|FCO": 797.91, "LAX|GDL": 250.12, "LAX|GUA": 475.12, "LAX|HKG": 692.2, "LAX|HNL": 287.01, "LAX|ICN": 737.13, "LAX|IST": 832.88, "LAX|JFK": 320.15, "LAX|KOA": 315.94, "LAX|KUL": 910.17, "LAX|LHR": 746.02, "LAX|LIH": 337, "LAX|LIS": 814.61, "LAX|MEL": 965.54, "LAX|MEX": 263.02, "LAX|MUC": 871.96, "LAX|NAN": 1157.13, "LAX|NRT": 695.23, "LAX|PEK": 780.72, "LAX|PSP": 446.01, "LAX|PTY": 722.36, "LAX|PVG": 814.98, "LAX|SAL": 510.39, "LAX|SGN": 726.3, "LAX|SIN": 783.36, "LAX|SJO": 506.86, "LAX|SYD": 866.89, "LAX|TPE": 814.67, "LAX|UIO": 590.01, "LAX|YUL": 396.29, "LAX|ZQN": 1286.36, "MCO|CDG": 665.93, "MCO|CHS": 157, "MCO|EZE": 827.33, "MCO|HNL": 640.72, "MCO|IST": 749.88, "MCO|JFK": 216.41, "MCO|LHR": 807.64, "MCO|LIM": 586.46, "MCO|MAD": 737.71, "MCO|WAW": 912.9, "MCO|YUL": 342.06, "MCO|YYZ": 293.27, "MIA|AUH": 1104.09, "MIA|BNA": 226.28, "MIA|BOG": 470.27, "MIA|CHS": 297.96, "MIA|CMN": 874.33, "MIA|CUN": 368, "MIA|EZE": 598.6, "MIA|GRU": 555.04, "MIA|HNL": 645.78, "MIA|LHR": 784.46, "MIA|LIH": 607.02, "MIA|LIM": 354.65, "MIA|NAS": 388.75, "MIA|NRT": 954.8, "MIA|PRG": 873.14, "MIA|PTY": 552.16, "MIA|PUJ": 338.61, "MIA|SCL": 546.24, "MIA|SJO": 418.14, "MIA|UIO": 560.91, "MIA|YUL": 322.83, "MIA|YVR": 231.84, "MIA|YYZ": 228.92, "MSP|MEX": 433.38, "MSP|YVR": 257.34, "ORD|ARN": 802.28, "ORD|ATH": 895.25, "ORD|AUH": 1139.1, "ORD|BER": 725.33, "ORD|BKK": 953.89, "ORD|CAI": 900.44, "ORD|CDG": 714.61, "ORD|CUN": 359.01, "ORD|DUB": 1419.24, "ORD|DXB": 850.28, "ORD|EZE": 943.67, "ORD|GDL": 289.84, "ORD|GIG": 645.41, "ORD|HNL": 493.98, "ORD|JED": 826.51, "ORD|JFK": 211.36, "ORD|KEF": 862.94, "ORD|LHR": 763.02, "ORD|LIM": 493.56, "ORD|MAD": 729.75, "ORD|MEX": 255.56, "ORD|SGN": 1012.01, "ORD|YUL": 333.75, "ORD|YVR": 264.26, "ORD|YYZ": 222.01, "PDX|HNL": 337.07, "PDX|JFK": 377.96, "PDX|PHX": 227.88, "PDX|SFO": 134.57, "PDX|TPA": 356.01, "PDX|YVR": 216.6, "PDX|YYZ": 438.01, "PHL|BCN": 922.83, "PHL|BNA": 286.59, "PHL|JED": 1078.41, "PHL|JFK": 263.58, "PHL|LHR": 1205.17, "PHL|MEX": 379.86, "PHL|YYZ": 404.01, "PHX|JFK": 314.12, "PHX|SFO": 241.09, "SAN|AUS": 243.59, "SAN|FCO": 1124, "SAN|HNL": 389.13, "SAN|JFK": 325.14, "SAN|LHR": 2234.65, "SAN|LIS": 1013, "SAN|MCO": 317.27, "SAN|MEX": 444.79, "SAN|MUC": 1152, "SAN|OGG": 277.49, "SAN|PRG": 1160, "SAN|VIE": 991, "SAN|YVR": 259.77, "SEA|AUS": 283.09, "SEA|BKK": 797.78, "SEA|BNA": 325.42, "SEA|CUN": 498.1, "SEA|HKG": 854.36, "SEA|HNL": 296.91, "SEA|ICN": 818.49, "SEA|JFK": 341.23, "SEA|LHR": 763.75, "SEA|MNL": 677.38, "SEA|MSY": 293.92, "SEA|NRT": 910.51, "SEA|PEK": 883.98, "SEA|PVG": 865.23, "SEA|SFO": 134.68, "SEA|SYD": 1328.87, "SEA|YVR": 264.61, "SEA|YYZ": 282.67, "SFO|AMS": 907.51, "SFO|BCN": 862.97, "SFO|BKK": 846.08, "SFO|BOG": 719.6, "SFO|CAI": 957.76, "SFO|CDG": 850.31, "SFO|CGK": 890.02, "SFO|EZE": 959.61, "SFO|GDL": 357.05, "SFO|GIG": 1217.08, "SFO|GUA": 388.85, "SFO|HKG": 716.78, "SFO|HNL": 244.55, "SFO|ICN": 701.89, "SFO|KOA": 363.99, "SFO|LHR": 764.09, "SFO|LIH": 294.3, "SFO|MAD": 784.6, "SFO|MNL": 647.55, "SFO|NAN": 809.97, "SFO|NRT": 778.36, "SFO|PEK": 948.5, "SFO|PHX": 241.09, "SFO|PVG": 853.71, "SFO|SGN": 842.1, "SFO|SIN": 871.07, "SFO|TPE": 623.32, "SFO|YVR": 237.53, "SLC|GDL": 353, "SLC|JFK": 419.85 }, "combosFound": 853, "topCombos": [ { "origin": "MCO", "enterCity": "JFK", "exitCity": "MIA", "enterDate": "2026-10-02", "exitDate": "2026-10-10", "tripDays": 8, "enterSource": "travelpayouts_cached", "exitSource": "travelpayouts_cached", "enterStops": 1, "exitStops": 0, "enterLayoverMinutes": null, "exitLayoverMinutes": null, "inboundFare": 102.01, "outboundFare": 59.91, "totalFare": 161.92, "cheapestSingleDestination": 216.41, "cheaperSingleDestCity": "JFK", "premiumOverSingleDestination": -54.49, "dealScore": null }, { "origin": "JFK", "enterCity": "BOS", "exitCity": "BNA", "enterDate": "2026-09-02", "exitDate": "2026-09-29", "tripDays": 27, "enterSource": "travelpayouts_cached", "exitSource": "travelpayouts_cached", "enterStops": 0, "exitStops": 0, "enterLayoverMinutes": null, "exitLayoverMinutes": null, "inboundFare": 86.09, "outboundFare": 96.97, "totalFare": 183.06, "cheapestSingleDestination": 172.47, "cheaperSingleDestCity": "BOS", "premiumOverSingleDestination": 10.59, "dealScore": null }, { "origin": "PDX", "enterCity": "PHX", "exitCity": "LAX", "enterDate": "2026-09-19", "exitDate": "2026-10-13", "tripDays": 24, "enterSource": "travelpayouts_cached", "exitSource": "travelpayouts_cached", "enterStops": 1, "exitStops": 0, "enterLayoverMinutes": null, "exitLayoverMinutes": null, "inboundFare": 111, "outboundFare": 74.6, "totalFare": 185.6, "cheapestSingleDestination": 227.88, "cheaperSingleDestCity": "PHX", "premiumOverSingleDestination": -42.28, "dealScore": null }, { "origin": "JFK", "enterCity": "BOS", "exitCity": "MCO", "enterDate": "2026-09-02", "exitDate": "2026-10-02", "tripDays": 30, "enterSource": "travelpayouts_cached", "exitSource": "travelpayouts_cached", "enterStops": 0, "exitStops": 1, "enterLayoverMinutes": null, "exitLayoverMinutes": null, "inboundFare": 86.09, "outboundFare": 102.01, "totalFare": 188.1, "cheapestSingleDestination": 172.47, "cheaperSingleDestCity": "BOS", "premiumOverSingleDestination": 15.63, "dealScore": null }, { "origin": "BOS", "enterCity": "MIA", "exitCity": "DEN", "enterDate": "2026-10-10", "exitDate": "2026-10-22", "tripDays": 12, "enterSource": "travelpayouts_cached", "exitSource": "travelpayouts_cached", "enterStops": 0, "exitStops": 1, "enterLayoverMinutes": null, "exitLayoverMinutes": null, "inboundFare": 79.97, "outboundFare": 110, "totalFare": 189.97, "cheapestSingleDestination": 159.35, "cheaperSingleDestCity": "MIA", "premiumOverSingleDestination": 30.62, "dealScore": null }, { "origin": "JFK", "enterCity": "ATL", "exitCity": "BNA", "enterDate": "2026-09-21", "exitDate": "2026-09-29", "tripDays": 8, "enterSource": "travelpayouts_cached", "exitSource": "travelpayouts_cached", "enterStops": 1, "exitStops": 0, "enterLayoverMinutes": null, "exitLayoverMinutes": null, "inboundFare": 96.83, "outboundFare": 96.97, "totalFare": 193.8, "cheapestSingleDestination": 192.02, "cheaperSingleDestCity": "BNA", "premiumOverSingleDestination": 1.78, "dealScore": null }, { "origin": "SEA", "enterCity": "AUS", "exitCity": "LAX", "enterDate": "2026-09-12", "exitDate": "2026-09-30", "tripDays": 18, "enterSource": "travelpayouts_cached", "exitSource": "travelpayouts_cached", "enterStops": 0, "exitStops": 0, "enterLayoverMinutes": null, "exitLayoverMinutes": null, "inboundFare": 138.16, "outboundFare": 56.01, "totalFare": 194.17, "cheapestSingleDestination": 283.09, "cheaperSingleDestCity": "AUS", "premiumOverSingleDestination": -88.92, "dealScore": null }, { "origin": "PDX", "enterCity": "SFO", "exitCity": "PHX", "enterDate": "2026-09-04", "exitDate": "2026-10-01", "tripDays": 27, "enterSource": "travelpayouts_cached", "exitSource": "travelpayouts_cached", "enterStops": 0, "exitStops": 1, "enterLayoverMinutes": null, "exitLayoverMinutes": null, "inboundFare": 79.57, "outboundFare": 116.88, "totalFare": 196.45, "cheapestSingleDestination": 134.57, "cheaperSingleDestCity": "SFO", "premiumOverSingleDestination": 61.88, "dealScore": null }, { "origin": "JFK", "enterCity": "ATL", "exitCity": "MCO", "enterDate": "2026-09-21", "exitDate": "2026-10-02", "tripDays": 11, "enterSource": "travelpayouts_cached", "exitSource": "travelpayouts_cached", "enterStops": 1, "exitStops": 1, "enterLayoverMinutes": null, "exitLayoverMinutes": null, "inboundFare": 96.83, "outboundFare": 102.01, "totalFare": 198.84, "cheapestSingleDestination": 216.41, "cheaperSingleDestCity": "MCO", "premiumOverSingleDestination": -17.57, "dealScore": null }, { "origin": "SEA", "enterCity": "PHX", "exitCity": "LAX", "enterDate": "2026-09-01", "exitDate": "2026-09-30", "tripDays": 29, "enterSource": "travelpayouts_cached", "exitSource": "travelpayouts_cached", "enterStops": 0, "exitStops": 0, "enterLayoverMinutes": null, "exitLayoverMinutes": null, "inboundFare": 150.65, "outboundFare": 56.01, "totalFare": 206.66, "cheapestSingleDestination": null, "cheaperSingleDestCity": null, "premiumOverSingleDestination": null, "dealScore": null }, { "origin": "PDX", "enterCity": "MCO", "exitCity": "LAX", "enterDate": "2026-09-21", "exitDate": "2026-10-13", "tripDays": 22, "enterSource": "travelpayouts_cached", "exitSource": "travelpayouts_cached", "enterStops": 1, "exitStops": 0, "enterLayoverMinutes": null, "exitLayoverMinutes": null, "inboundFare": 133, "outboundFare": 74.6, "totalFare": 207.6, "cheapestSingleDestination": null, "cheaperSingleDestCity": null, "premiumOverSingleDestination": null, "dealScore": null }, { "origin": "BOS", "enterCity": "MCO", "exitCity": "JFK", "enterDate": "2026-08-29", "exitDate": "2026-09-14", "tripDays": 16, "enterSource": "travelpayouts_cached", "exitSource": "travelpayouts_cached", "enterStops": 0, "exitStops": 0, "enterLayoverMinutes": null, "exitLayoverMinutes": null, "inboundFare": 108, "outboundFare": 100.2, "totalFare": 208.2, "cheapestSingleDestination": 186.58, "cheaperSingleDestCity": "JFK", "premiumOverSingleDestination": 21.62, "dealScore": null }, { "origin": "BOS", "enterCity": "MIA", "exitCity": "CHS", "enterDate": "2026-10-10", "exitDate": "2026-10-22", "tripDays": 12, "enterSource": "travelpayouts_cached", "exitSource": "travelpayouts_cached", "enterStops": 0, "exitStops": 1, "enterLayoverMinutes": null, "exitLayoverMinutes": null, "inboundFare": 79.97, "outboundFare": 130.11, "totalFare": 210.08, "cheapestSingleDestination": 159.35, "cheaperSingleDestCity": "MIA", "premiumOverSingleDestination": 50.73, "dealScore": null }, { "origin": "ORD", "enterCity": "JFK", "exitCity": "BNA", "enterDate": "2026-09-02", "exitDate": "2026-09-11", "tripDays": 9, "enterSource": "travelpayouts_cached", "exitSource": "travelpayouts_cached", "enterStops": 0, "exitStops": 1, "enterLayoverMinutes": null, "exitLayoverMinutes": null, "inboundFare": 105.96, "outboundFare": 107.27, "totalFare": 213.23, "cheapestSingleDestination": 211.36, "cheaperSingleDestCity": "JFK", "premiumOverSingleDestination": 1.87, "dealScore": null }, { "origin": "DFW", "enterCity": "AUS", "exitCity": "JFK", "enterDate": "2026-10-05", "exitDate": "2026-10-23", "tripDays": 18, "enterSource": "travelpayouts_cached", "exitSource": "travelpayouts_cached", "enterStops": 0, "exitStops": 1, "enterLayoverMinutes": null, "exitLayoverMinutes": null, "inboundFare": 83.57, "outboundFare": 136.79, "totalFare": 220.36, "cheapestSingleDestination": 220.57, "cheaperSingleDestCity": "AUS", "premiumOverSingleDestination": -0.21, "dealScore": null } ] }