Someone over on Airliners/net posted this great chart of the top O&D US Airports. Logan ranks very high on this list:
Airport - Daily Pax - Length - Yield cents
1. LAX - 90,338 - 1611 - 12.0
2. LAS - 78,786 - 1239 - 12.0
3. ORD - 75,392 - 1056 - 17.3
4. MCO - 71,836 - 1128 - 12.9
5. LGA - 62,162 - 981 - 16.7
6. BOS - 59,766 - 1307 - 13.7
7. PHX - 58,876 - 1217 - 12.2
8. DFW - 58,736 - 1065 - 16.3
9. SEA - 54,272 - 1491 - 12.3
10. DEN - 52,008 - 1056 - 14.1
11. ATL - 51,498 - 893 - 18.2
12. SFO - 50,004 - 1657 - 12.2
13. JFK - 49,002 - 1659 - 11.9
14. FLL - 48,820 - 1230 - 11.5
15. EWR - 43,394 - 1388 - 15.2
16. PHL - 42,740 - 1221 - 14.9
17. DCA - 41,994 - 979 - 17.8
18. SAN - 41,628 - 1370 - 12.5
19. MSP - 41,440 - 1071 - 17.7
20. BWI - 41,344 - 1019 - 14.8
21. IAH - 39,556 - 1154 - 18.8
22. TPA - 38,648 - 1104 - 13.5
23. DTW - 37,736 - 1053 - 17.3
24. MDW - 32,818 - 912 - 15.4
25. HNL - 30,736 - 2082 - 9.2
26. PDX - 29,500 - 1363 - 12.3
27. CLT - 26,664 - 895 - 20.4
28. MIA - 26,496 - 1279 - 14.0
29. STL - 25,944 - 942 - 16.1
30. SLC - 25,492 - 1119 - 14.9